Literally, German for "shit." Commonly used in everyday language meaning "Holy Crap I can't believ that happened!"
After the girl tripped and hit her head on the desk and fell unconcious, the boy exclaimed "Sheisa!"
von wiggy 17. April 2003
a german porno where the man shits on the girl and then the girl shits on the guys chest
i had a sheisa with that hot girl it was awsome
von dan re man 29. Juni 2003