Anything by Color Me Badd, though really that isn't appropriate for anywhere.

I suppose that despite the name you shouldn't play Drive By Truckers "Marry Me" either

I could see the Beasts of Bourbon's version of "Psycho" might be a bit of a problem too.

"She's Not For You" - Willie Nelson

This happens as soon as the hip hop comes out in my experience.

"This colored folks music'll be the death of them"

"Betrayal Takes Two" - Richard Hell

Holy Shit, I think I'd spit my drink out if I heard a relative say that at a wedding.

Fuck The Pain Away - Peaches

Especially if the bride is named Stacey.

(This same thread was on Lala yesterday:
http://www.lala.com/frontend/action/for ... t=1H276936 )

Anything off A.C.'s It Just Gets Worse.

1. "I Became a Counselor So I Could Tell Rape Victims They Asked for It"
2. "Easy E Got AIDS from F. Mercury"
3. "I Like Drugs and Child Abuse"
4. "Laughing While Leonard Peltier Gets Raped in Prison"
5. "I Convinced You to Beat Your Wife on a Daily Basis"
6. "I Sent Concentration Camp Footage to America's Funniest Home Videos"
7. "Rancid Sucks (And The Clash Sucked Too)"
8. "I Paid J. Howell to Rape You"
9. "I Pushed Your Wife in Front of the Subway"
10. "Extreme Noise Terror Are Afraid of Us"
11. "You Rollerblading Faggot"
12. "I Sent a Thank You Card to the Guy Who Raped You"
13. "I Lit Your Baby on Fire"
14. "Body by Auschwitz"
15. "I Intentionally Ran over Your Dog"
16. "Sweatshops Are Cool"
17. "Women: Nature's Punching Bag"
18. "I Snuck a Retard into a Sperm Bank"
19. "Your Kid Committed Suicide Because You Suck"
20. "I Ate Your Horse"
21. "Hitler Was a Sensitive Man"
22. "You Robbed a Sperm Bank Because You're a Cum Guzzling Fag"
23. "I Made Your Kid Get AIDS So You Could Watch It Die"
24. "I Fucked Your Wife"
25. "Into the Oven"
26. "I Gave NAMBLA Pictures of Your Kid"
27. "The Only Reason Men Talk to You is Because They Want to Get Laid, You Stupid Fucking Cunt"
28. "I Made Fun of You Because Your Kid Just Died"
29. "Domestic Violence Is Really, Really, Really Funny"
30. "Dictators Are Cool"
31. "Deadbeat Dads Are Cool"
32. "I'm Really Excited about the Upcoming David Buskin Concert"
33. "Being Ignorant Is Awesome"
34. "You're Pregnant, So I Kicked You in the Stomach"
35. "Chris Barnes Is a Pussy"
36. "Tim is Gay"
37. "BT/A.C."
38. "I Sold Your Dog to a Chinese Restaurant"
39. "I Got an Office Job for the Sole Purpose of Sexually Harassing Women"

Dammit, that was the first song that popped in my head.

I think there would be a lot of great, inappropriate songs from Radcliffe's mix:

http://www.obner.org/bb/viewtopic.php?t=26592

BAND OF GOLD - 19/09/1970
6 weeks at #1 - 19 weeks on chart

Now that you're gone
All that's left is a band of gold
All that's left of the dreams I hold
Is a band of gold
And the memories of what love could be
If you were still here with me

You took me from the shelter of a mother, I had never known
The love of any other
We kissed after taking vows
But that night on our honeymoon
We stayed in separate rooms

I wait in the darkness of my lonely room
Filled with sadness, filled with gloom
Hoping soon that you'll walk
Back through that door
And love me like you tried before

i second this

also:

Aphex Twin - Milkman (the ole "i would like some milk from the milkman's wifes tits" would cause problems)

Aphex Twin - Come to Daddy

Prodigy - Smack My Bitch Up

My sister played Buckcherry's "Crazy Bitch" at her wedding. Yeah, it was unedited.

(intro)ALL RIGHT...........

(Verse)
Break me down,
you got a lovely face,
we're going to your place and now you got to freak me out
Scream so loud,
getting fucking laid,
you want me to stay
but I got to make my way

2x Chorus:
Hey, you're a crazy bitch,
but you fuck so good I'm on top of it.
When I dream, I'm doing you all night.
Scratches all down my back to keep me right on.

(Verse)
Take it all,
the paper is your game,
you jump in bed with fame another one night paid in full
You’re so fine,
It won’t be a loss,
cashing in the rocks just to get you face to face.

2x(Chorus)

(bridge)
Get the video, fuck you so good
Get the video, fuck you so good
Crazy Bitch,
Crazy Bitch,
Crazy...
Bitch

2x (Chorus)


(verse)
Come on. Baby girl you want it all to be a star you’ll have to go down
Take it off no need to talk you're crazy but I like the way you fuck me

2x(Chorus)
keep it right on x2
you're crazy but i like the way you fuck me.