The expression for what you do with your buttcheeks when you need to really need to hold in your fart. Called "nutcracking" because you clench your cheeks so tightly that you could crack a walnut (or some other kind of nut) in between them.

The sex act of "scissoring" with two dudes.

The precise point on the male body where the nuts meet the asscrack; tends to be easily irritated by cheap underwear and rough toilet paper

too tight pants worn by men

When someone comes up n kicks a guy in his ballsack as hard as possible

When you get hit by something/someone in your balls/testicles so hard you scream nutcracker

an excellent ballet by Peter Ilyich Tchaikovsky. The music is set to the story by E.T.A. Hoffmann. The ballet was composed in 1892, as his Op. 71. The Nutcracker is his shortest ballet, much shorter compared to Swan Lake. The ballet contains two acts and is most famous for Scene 12, the Divertissement, which contained most of the pieces in the Nutcracker Suite which became more popular than the ballet itself.