1 definition by Heinie

Top Definition
1. The dude who joined your family because your sister got

knocked up a month ago.
2. When you take it easy on another person because you know

them, esp. in sports
1. My sister got married and i cant stand my new brother-

in-law.

2. Dont be actin' like a brother-in-law when playin' football.
by Heinie June 05, 2009

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