Top definition
Looking after you're mate's girlfriend while he's away (for a short or long period), and treating her as if she was your own.
Person 1: "Who's that girl that James is with? Is that his mrs?"
Person 2: "Nah, he's just girlfriend sitting for a few weeks"
by Pillobeam September 13, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug