The group of musicians in any marching band that play the sousaphone. The group can often be seen not practicing, getting drunk, or hitting on the twirler line. It should be noted that all members of the Tuba Sex Orgy are denoted "Bros," even female members.

An as of yet untested sex act in which the perpetrator, whilst being fellated by the victim, screams "BANZAI!!!!!" and rips a deafening (preferably wet) fart directly in the face of said victim. Extra points are awarded if victim is either drunk from excessive saki or is somehow dressed as a geisha.

The dude puts chap stick up the librarian's vagina and plays it like a trombone until his lips become unchapped.

the aftereffect of when two people are slightly high off of natural 7/11 energy pills that they downed with french fries on a deserted street corner at four in the morning.

To insert a brass mouthpiece (a tuba mouthpiece is ideal for accuracy, but a trombone or high wind will work) into a woman's vagina and blow into it as if you were playing.

Can also be phrased as "turn this bitch into a tuba," if she is not already in a relationship.

during an intimate act of manual pleasure on the anatomical vertical male part the performer is also engaging in oral sex in or around the anal area...prior to climax the receiving party performs an act of flatulence.

An anal raspberry blown into a large ass. Sound required