Floppymortis

when something is done and it becomes soft, floppy, or anything along those words opposite of rigamortis

when your penis gets soft after intercourse

when your fucking a girl and you splooge and your dick gets soft

Richard: dude i was having sex with jane last night and couldnt keep it up when i finished i went straight to floppymortis

Jane: OMG girl when Richard and i was fucking last night i couldnt finish he finished too fast and went straight to floppymortis