look up any word, like steppin on my dick:
 
1.
Some one who lies about everything and exaggerates the truth.
Zack Langford just told me that he had a threesome what a thumbtack
by Zachethethumbtack October 09, 2011
 
2.
Sexual Position. The man sits in a chair and the girl sits on his erect penis. Kind of like how you would put a thumbtack on your teachers chair so that they would sit on it.
"Dude did you bang that chick last night?"
"Yea, I thumbtacked her."
by Rocker2791 February 09, 2009
 
3.
Noun: Erect nipples, like tho.
Man, she got thumb tacks like a bulletin board
by Andy McLeod February 05, 2004
 
4.
to shoot someone running or shoot without notice
"Ya hear Jon Jon got thumbtacked by Lil Beaver"
by Chris Beaver December 07, 2003