A person who is so dumb, that thier brain isn't even a brain anymore, it's just a panini. This is normally an insult if used by commoners, but if ever used on you by Chef Gordon Ramsey, you will be blessed beyond measure.
A character based on the Team Fortress 2 Soldier that was originally meant to be a response to a sub-fad by Youtube user of Rubberfruit.
"I am Painis Cupcake... I will eat you..."
-Painis Cupcake