top tier is "I could shove my girldick into this oversized revolver, i could shove this up my ass" etc
second tier is more varied, these guns COULD be fuckable, but it requires slight modifications or work or some level of effort to figure out how
third tier is guns that feel sexy or erotic in some way, guns that if they were personified would be fuckable, but you should not get near your body as is
and unfuckable is unfuckable
@typhlosion how on EARTH do you fuck that gun