firm up

get an erection; acquire an erect penis

Horny slut to drunken bum: FIRM UP, DARLING

by yorrick hunt January 14, 2008

firm up

to acquire a more toned physique

I can't believe she just ate that entire cake! She'll never firm up before her wedding

by FirmTarantula October 24, 2022

firm it up

To take something that is hard to manage and complete the task

Benjamin - "This maths work is so hard fam"
Tyrese - "Firm it up"

by savvyfromnrth October 27, 2018