Person who masturbates a lot to porn; usu. porn involving tentacles and small children.
*abusive mother walks into room* "Hey, you damn fappie, get up, we're going to visit daddy again"
by GP17 February 28, 2008
1 more definition
A very long, lucious eyelash.
"Madisons fappies are quite huge, i love to pet them all day long at snack time"
by kristi king January 16, 2008