Often pronounced “fass

Someone is behaving more maturely than their chronological age or extremely opposite of their normal behavior.

Usually the actions are sexual or done to entice or attract attention.

This can can be reflected through clothing, speech patterns and actions.

Often used interchangeably with “grown”
Girl, sit your fast ass down.
Oh you're being fast with that short skirt showing all those legs.
We see you over there with dude! You're so fast.
by Lady_A124 February 28, 2022
Get the Fast mug.
something that is going at a particularly high speed,like you replying after getting a text from the girl who left you on read for 3 months.
by I am a man of truth November 5, 2022
Get the Fast mug.
Moving or capable at moving on high speed and very quickly
Wow,Susie is so fast!!
by MingALing10 March 10, 2021
Get the Fast mug.
when youre fast , you dont like being called slow so you call yourself fast.
jaylen said lisa was “slow” when she asked “what is obamas last name” , but no lisa is insecure about her slowness so therefore , she is fast.
by bigbootyjudy2013 February 18, 2018
Get the fast mug.
The secret third option in the game smash or pass. It means that currently you’ll pass but you’ll smash later when you’re feeling hornier.
*you reach Pokémon #801*



Fast.
by PBJelly6 July 22, 2023
Get the Fast mug.