1. Bend over so you're on all fours.
2. Relax your muscles and allow your asshole to "gape" and let air in.
3. Squeeze the air out by tightening your muscles.
4. Repeat from step 2
This should "shitify" the air by making all the air be air that was in your ass.
example 1:
me (on the bed): *shitifing the air*
my gf (at her desk, hearing me): STOP SHITIFYING THE AIR!
example 2:
me: *on all fours on the bed)
my gf: i know what you're going to do, don't shitify the air
To copy someone's vibe, style or other personal "trademarks"
Example 1:
Me: My friend just announced he's getting a guitar right after I showed off the guitar I just bought, AND he got the same guitar strap as me? he's crimping my vibe hard.
Example 2.
Me: Did you see Ethan is using Jay's catch phrase now? He's totally crimping her vibe.