When a fan of my little pony get's an erection.

A Bloomer is someone with a bright outlook on life who is optimistic in nature. Bloomer's frolic in every opportunity to be happy and try to make the most out of life. The opposite of a Bloomer is a Doomer. The term Bloomer originated specifically as a counter to the Doomer on sites especially like 4Chan.

Is a term used to describe a situation where two guys get shitfaced, pass out in the same bed, and at some point end up spooning, and upon waking up realize the big spoon has a boner and it’s poking his bro.

An unintentionally manly inspired boner.

A Bro-ner is when you get an involuntary erection from doing something testosterone fueled and hella not gay with the bros. Popping a Bro-ner around bros is quite acceptable, and they will probably call you a "stud" and ask if you want to hit the gym or chug a fifth of Jaeger.

The accidental erection, or boner, induced by a male friend.

A slang term used to explain the phenomenon during which a fiercly heterosexual male achieves an erection (or, "boner") for or while in the company of one of his male friends (or, "bros"). This may only occur while engaging in all-male activities, particularly those which include feats of strength or displays of hyper-masculinity. Upon achieving a broner, the man in question is often known to exclaim, "dude, suck that shit!" or "meet me in the shower."