A portmanteau of Bum Mentality, Bumentality (pronounced buh-mentality) refers to the thinking of someone unwilling to act or impose their will if it comes with the risks of failure or embarrassment. It is not designed as a permanent description, you can have strong people be troubled with temporary Bumentality.
LA : Damn, I was hooping with Rio and he got himself an open shot, but then just chose to drive into the other team.
BR : Yeah, that bitch has bumentality
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.