someone who gets their panties in a wad a lot over nothing, or someone who gets someone else's panties in a wad over nothing.
that stupid motherfucker is a class-A pantywadder, cuz theyre goin on how spinners on yur ride makes it look like yur still goin at a red lite, so the popo r gonna pull yo ass ova & write u up. wat a pantywadder.
someone who gets their panties in a wad a lot over nothing, or enjoys getting other peoples panties in a wad. this is, of course, metaphorical, and not literal.
look at dat foo, hes gettin his panties in a wad cuz his favorite ho just got shot. wat a pantywadder.