5MM - UNPOPPYWOPPY - SPLITTING THE EXPENSIVE BILL

Splitting the bill evenly when one person had three cocktails and a steak, and the other had water and a side salad, is a form of "social robbery." The phrase "let's just split it" is almost always used by the person who spent the most money to avoid paying their fair share. Is it about the "vibe" and the friendship, or is it about basic fairness and not being taken for a ride?