( i may have misheard the lyrics) what is this song?

it sounds like tonights the night ahhhhohhh ahhhhohhh ahhhhohhhhhhh

(ahhhh ohhhhhhhhh) not ahh hoooooo

the syllables are like

na na na na ahhoohhhh ahhooohhh ahhooohhhhh

it was in the trailer for that movie where these buddies go to vegas and their friend gets lost and they have to find him and they have a baby with them and then theres a tiger in there hotel room and then mike tyson punches one guy in the face, and their friend with a beard gets tazed in the face.

i cannot remeber the name but it did not come out TOOOOOOOOOOOO long ago.

i realize that this is the most ridiculous description of a movie, but i promise im not making it up.

( for the sake of all of you guys that are like " omg spammer " or something.)

im sure alot of you have seen this movie, it was REALLY funny.