thrusty rusty
A cock of a gay man, usually use only for penetrating the ass of other men. But once it's in proximity to any female presence, it shrinks to the size of a nano chip. But when men are around, it shoots up like a long range missile.
Willie's thrusty rusty wakes up again after he steps away from those female pole dancers and swimsuit models and bumps into Dave and Edison. Willie is horny now.