A picture of a person taken from a good angle or in an unusual circumstance which makes them look a lot better than they do in person.
I was gonna bang this chick I've been chatting with online for a month, but when I finally met her in person it turned out she was ugly and all her pics were total trick pics.
When a girl has a great looking profile pic, but looks like ass in person.
It just all comes together for that one picture, and no other.
(Looks at girl's Facebook profile)
"This girl sounds great dude.. she's bangin"
"Yeah, if you like A Flock of Seagulls, then that's great.. cause she's a one-pic wonder. That's a trick pic."
The main purpose of a thicc pic is to show off how big your butt or titties are, in other words to show off that thickness. NOT NUDES THO, you are mostly to fully clothed, it’s only to show off how thicc you are without getting too weird