1. Two or more people taking it easy on each other in order to not get hurt or suffer harsh consequences.

2. Most people do not like or care for their brother-in-law, so they are falsely nice to them.
Two teammates are lazily going through football drills.

Coach: Dag nabbit, y'all two quit brother-in-lawing it and hit each other!
by jb55 November 25, 2013
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The relation that results from your sister marrying a meathead. AKA: bromo, the inconvenient meeting of brother-in-law and homo.
"My brother by law is such a bromo, he is in a Wham! "tribute" band, drives a mid 80s Dodge Charger, and has been to see Mamma Mia in the theater --- three times."
"What a choad that guy is."
by nolajohn May 19, 2009
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"He who fucks your sister" or "He who fucks my sister"
"This is John, my brother-in-law."
"You mean 'he who fucks your sister'?"
by nestnestsoto May 26, 2020
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Your sisters husband or husband's brother, usually older.

The guy at the family gatherings who makes you uncomfortable by getting drunk, staring and then shamelessly hitting on you then calls you a fat bitch to eveyone else.

Monster In-law is oblivious to the disgusting ways of this child.

The guy with a chip on his shoulder because he can't get it together and hold down a job.
I bumped into my Brother-in-law at the grocery store, he winked at me before his wife came back with grapes, then proceeded to tell her how ugly I am.
by closeyurlegsperusmellslikefish October 19, 2013
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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 6, 2009
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Your wife's loser brother. Has tons of good ideas but needs to "borrow" a thousand dollars to get started.

He's an expert at everything futile, worthless and unprofitable.

He talks constantly.
Oh honey, I had to write Trent a check today, he is starting a business cleaning bicycles for the Salvation Army, he's going to make it big this time! We have to dear, you worked overtime for a month and he's your brother in law. Don't you love me?
by Phd2x July 18, 2010
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n. A pejorative term for just about anybody who happens to be a douche. Doesn't have to be related.
Mike: "Jerry was at the gym today doin' what he do. Ol' brother-in-law talked my ear off for like 20 minutes and I couldn't think of a good enough excuse to get out of there."

Joe: "Yeah, that dude is jerk."
by laker fan June 1, 2011
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