What does ‘dewdropper’ mean?

No matter if the kiss is the bee’s knees or a flat tire, when a guy turns out to be nothing but a dewdropper, all bets are off.

Dewdroppers don’t “dew” anything at all; they’re lazy guys who snooze all day and don’t have jobs.

But, beware, because you also didn’t want a cake-eater in the 1920s (he’s a player who samples too many sweets). What you were looking for was an air-tight (“super attractive”) guy who knows his onions.