stiffy

plural stiffies

1. slangvulgarAn erection of the penis.

   Fred's got a bulge in his pants — you can tell that he's got a stiffy.

   Synonyms: woody

2. South AfricaA computer floppy disk of the kind supplied in a stiff plastic outer shell.

   Never leave home without a spare stiffy disc in your bag.

   Synonyms: stiffy disc

3. slangAn extended magazine of a gun.

   Niggas iffy, uh, blicky got the stiffy, uh

   2017 November 4, Lil Glowstick, “Gummo”

   2 more examples

   Oh you know I like to mac When they don’t talk back I'll be there in a jiffy with a stiffy

   2014 October 7, Electric Six, “Alone With Your Body”, in Human Zoo

   You niggas too iffy, my Glock got a stiffy

   2018 November 25, “Bank Teller”, Lil Uzi Vert (lyrics), Lil Uzi Vert, Smokepurpp, and Lil Pump (music)

4. A rigidly conformative person; a square or goody-goody.