thick as a plank

Somebody is who is beyond stupid in general or at certain tasks. They are so dumb that they compare to a plank of wood in terms of brain usage.

In fact the plank of wood will usually solve the task before the person.

Jack: So did Alan manage to fix that rusty gate?

Bill: Nah man that lads as thick as a plank.

by MrWeldon February 6, 2018

Fsms thick

Fsms thick is when your jeans don't have air in them there for you are thick by fsms standards.

She's not thick but she's fsms thick

by Xela Enivoe September 29, 2017

Dummy thick

When a chick is sooooo damn thick, she makes boys dumb af

Bro Kate is so Dummy thick , she made my IQ go down

by Jayyy13 May 23, 2018

thick af

someone with a huge ass or thighs.

boy 1: "damn did you see audrey's ass?"
boy 2: "i know! she's thick af!"
audrey: "stop looking your perv's!"

by lucyhale June 10, 2017

shawty thick

Referring to a girl being thick. ( having curves , booty , thighs ect.)

"damnnn , shawty thick! I would tap that "

by pinkbooty January 23, 2016

Slim Thick

When you're skinny but still have ass and titties.

"Aye man, what would you consider Mimi?"

"Mm...chubby and thick."

"Nah, NATSUMI'S chubby and thick, but Mimi is slim thick. She's skinny as fuck, but that ass and those titties still poke out, and they jiggle when she runs"

"...Shiiit you right"

by tsxmi.vee May 20, 2019

Momentum Thickness

A fancy term in the field of fluid mechanics that really just describes the boundary layer momentum thickness. No one really knows what it is, what it does, or how to use it - not even the teacher.

Boy 1: "Wow! look at that momentum thickness"
Teacher: "What is that?!"

by wolfsonlover May 24, 2019