Queen - We Are The Champions; we were all singing the lyrics going through McDonalds drive thru those of us that were intoxicated.

Ascension Day by Talk Talk is a lot of fun.

2 albums worth of Oasis, if I got drunk at a party and any Oasis song came on I'd sing like an absolute drunken moron. - That's me being a happy drunk rather and Joy Division being sad drunk me.

I'm kind of the same with the Oasis/happy drunk thing. Not really Joy Divison though.. I think everyone gets a singalong with the 80s stuff. I dont know anyone who doesnt know the words to Take On Me by Aha ;)

The best song to sing when you're drunk is the worst song you can think of when you're sober. These are the two worst songs in the world and I sing them whenever I am really really REALLY drunk.

How about "War Pigs" by Black Sabbath?

Singing a 7 minute song when pissed? No thanks, I need it to be short and sweet so I can have another sip of my drink.

This, obviously:

...seriously though, this next one works a treat...

oops..
 

I did it again--Britney Spears..My girlfriend sang that wasted at her bridal shower..Was too funny..