pouch

To put an object in your pocket in a sneaky way. Can also mean to eat junk food fast.

Etienne was a the dentist signing some consent forms.

Etienne: "Hey, this pen is nice. Can I keep it?"
Receptionist: "Sure, whatever".
Etienne pouches the pen.

-I just pouched this poutine.

- "Dear sir, I would like to offer a $5.00 Tim Horton gift card as a thank you for waiting today".

"Great, I'll pouch that".