a person whom you are related to. sometimes a role model. sometimes an ass. sometimes a friend. a person who you are stuck being related to until the day you die through good or bad.
A brop is a burp that is typically used to stave off puking while drunk. Occasionally those who cannot handle their liquor will experience a slew of brops the day after their hangover.
Alternately, a brop or bropp is a boisterous belch that is novel and sounds like some kind of movie or cartoon sound effect, not believed to be real by the bropper or broppee. Brops are like the Wilhelm Scream of burping and should be rewarded with immediate fellatio.