Ahsett!
A variation of the term "oh shit", mostly used to show surprise (usually exaggerated and fake).
Matt: AHSETT!
Jordan: What's up?
Matt: I finally beat the last boss of MegamanX3 after 6 hours of bullshit!
Jordan: What's up?
Matt: I finally beat the last boss of MegamanX3 after 6 hours of bullshit!