Everybody knows you don't mess with Cookie Monster when it comes to his beloved cookies. Apparently, you also don't mess with him when it comes to his cash!

On Sunday, 33-year-old Osvaldo Quiroz-Lopez of Queens, New York was in Times Square taking pictures with kids and tourists as he was dressed as the Cookie Monster.

Mid-afternoon he took a picture with a 2-year-old kid and proceeded to ask the mom for a $2 tip. When the parent refused, things got ugly and Quiroz-Lopez shoved the kid.

The big furry blue man was arrested and charged with assault and endangering the welfare of a child.

For the love of all things that are good with Sesame Street, what was he thinking?