2. A person who puts something illegal into your unsuspecting pocket.
"I swear its not mine! My friend Frank smokes pot, and he's a good putpocket!"
2. A: Woah. I just found a candy cane in my pocket!
B: Cathy gave it to you secretly, she's a putpocket.
I was on the bus today and I saw some putpocket sticking money in an old ladies purse.