
Can't. Stop. Laughing.
This one is particularly awesome if you happen to have a child who looks nothing like his daddy, but really, what dad doesn't want to proclaim his paternity -- clandestine or not -- on Father's Day? Say it loud, say it proud, dads. You're the milkman. You delivered.
(Extra points on this one if your kids are too young to get it. Heh.)
In four different styles, starting at $28, from Urban Baby Runway.