A penis that is really, really short when flaccid, but can triple, sometimes quadruple in size when aroused.
something that does exist, much to the disdain of the showers, which tend to be asshole jocks
or over confident douchebags
growers, on the other hand, have low libido, but enough kick in their man cannons to pleasure their woman. watch the magic, from 2 inches to 7. holy shit
1. (in locker room) dude1: dude, what the hell is that? *laughs*
Dude 2: whatever, i'm a grower.
later that night
Dude 2: watch the magic baby...
chick 1: Damn thats some serious magic!