'Yssup' is derived from spelling 'Pussy' backwards. It is the best way to get away with saying it in front of people who hate the P word.
When the menses be havin a sausage party, the girls throw the yssup party!...or Stop being such a yssup
Pussy spelled backwards.
*slurping noise* yssssssup!
The action of a man losing his nut sack, do to fear or lack of confidence in his surroundings and getting a big hairy vagina.
Your new name is Yssup for your actions.
You have just been Yssuped.
Another name for a pussy; Something you call someone when you are in a crowd and you don't want to say "pussy".
Yo man James is being such a yssup lately.