floppy johnson 

The act of whipping your junk out and slapping sum1 one anywhere on there body.

Lil BowWow: I just got a floppy johnson in the fac.

Mom: By who?

Lil BowWow: Mike Jones! Bitch

Mom: Who?

Lil BowWow: and it stung he hit me in the forhead!

floppy johnson by Evan Fedronski December 7, 2005

Floppy Johnson 

When you fail to put on a condom correctly, causing the chick to lose interest and say "just forget it," leaving you with a floppy dick

I couldn't get the condom on fast enough so she was like "ya know what? nevermind." Needless to say, i got a floppy johnson last night

Floppy Johnson by El Muchador April 25, 2010