/Jak/./En/./Tha/./Baks/ adj. 1. To drop in on someone completely unannounced thus upsetting them or potentially ruining something. 2. Dropping in without calling. 3. Showing up unannounced and fucking everything up.

The act of taking an aborted fetus and inserting it into a girls rectum. Then when your friend is having sex with her, you run out and jump on her stomach, revealing the suprise.

While one is having sexual intercourse with his girl and they are fucking but while his penis is in her he grabs the end of it and "shakes hands with mr. happy" until he climaxes.

Before climaxing during a blowjob slamming your partners head down, thus making her deep-throat your penis and ejaculating down her throat.

When one takes Adderall when one is still half asleep, whilst setting one's alarm to go off ten minutes into the future. When the alarm goes off, one will find oneself jumping up, suddenly wide awake. Popping up out of one's bed like that fey, much-celebrated children's toy of yesteryear.

While a person is getting their butthole licked, a rectal tickle occurs enticing a fart.

When a man masturbates into a cardboard box and delivers it to his girlfriend