n. The act of taking up more than the alotted space on public transport with one's purse or belongings.
Person 1: I couldn't sit down because this girl had two huge Macy's bags on the seat, and she wouldn't hold them or put then on the ground.
Person 2: you were just another victim of chickspansion
Person 2: you were just another victim of chickspansion
by Spaztronomical March 03, 2016