Gettin Thick 

What you say to your friend when her butt and or thighs are getting bigger. I wouldn’t prefer guys to say it to girls tho.
It also boosts the girls ego.

Ooh gurl I see you gettin thick

Gettin Thick by Duh.itz.me July 1, 2018

gettin' thick 

the 'run-away' tendency of the human body to 'get thick', due to chronological erosion, "fatty' foods, and/or lack of exercise.
there never seems to be any end to how big the body will get if left 'unchecked'!

wheres' janiece? dunno...prob'ly off gettin' thick!

she ate a large pizza, chug-a-lugged a case of beer, turned on the t.v.; then sat down to get thick!

the elderly woman's arms were gettin' thick!

his guts were gettin' thick from all the beer.........

gettin' thick by michael foolsley August 4, 2011

I’m getting thick 

Another way of saying I’m getting an erection or getting boned up.

Bro, I’m getting thick after seeing's that shirt your mom was wearing.

I’m getting thick by Hamper Hunter December 1, 2020