It's that nervous habit some people have when they stretch their shirt out over their knees. Usually results in one of your parents scolding you for stretching out the fabric
Zach: "Ryan! Stop making a shirt-hut! You'll damage the fabric!"
Ryan: "But I've got a big programming exam tomorrow and it's a nervous habit. Please don't get out the belt Zach!"
Ryan: "But I've got a big programming exam tomorrow and it's a nervous habit. Please don't get out the belt Zach!"
by Bize92 March 6, 2011
Get the Shirt-hutmug.