When your bro or a stranger is at an adjacent urinal and needs help with getting the dew off the lilies.
"Hey bro, you need slappies?" "Yeah man, you?" "Yeah." *slaps* *slaps* "Thanks!" "No problem!
When two men are at adjacent urinals, it is common courtesy to ask if the man next to you needs slappies. Slappies is when you assist another man with "shaking the dew off the lilies" so-to-speak. You slap the man's d*ck to get the last few drops of urine out for him. It is also common for the slappee to ask the slapper if he would like slappies as well.
"Hey bro, need slappies?" "Yeah." "Ok!" *slaps* "Thanks man, do you need slappies?" "Yeah." *Slaps* "Thanks man." "No problem!"
something that slaps; something that is very good
Yo that song on right now is slappy
A girl or woman who is only used for sexual purposes
He doesn't like her like that, she is just a slappy
A dirty old Goon who makes slapping noises tapping it’s old punani
That old Slappy Granny is making loud noises