Etymology From bro + hoof, by analogy with brofist.
1
A fist bump shared between fellow bronies to represent pony hooves.
My Little Pony fandom slang
R.S. wears the gear to signal that he’s into ponies, he says. When he’s on campus, he’ll meet other fans and maybe even receive “a random brohoof on the street,” he says. (A brohoof is like a fist bump. A fist bump is like . . . oh, forget it.)2012 April 6, Melody Wilson, “D.C. ‘bronies’ feel the love and friendship of ‘My Little Pony’”, in The Washington Post:
While other people look on with confused and strange looks, bronies are free to talk about a great show and brohoof all day long (A brohoof is a fist pump between bronies and/or pegasistahs).2012, David C. Benson, "It's Okay to be a Brony", The Clock (Plymouth State University), Volume 57, Issue 20, Volume 57, 27 April 2012, page 11
1 more example
My Little Pony is redefining manhood and that deserves a brohoof.2014 March 19, Hugh Johnson, “Of bronies and men: Rethinking manliness”, in The Denver Post:
brohoof
verb
Etymology From bro + hoof, by analogy with brofist.
1
To fist bump a fellow brony.
My Little Pony fandom slang
While other people look on with confused and strange looks, bronies are free to talk about a great show and brohoof all day long (A brohoof is a fist pump between bronies and/or pegasistahs).2012, David C. Benson, "It's Okay to be a Brony", The Clock (Plymouth State University), Volume 57, Issue 20, Volume 57, 27 April 2012, page 11
The bronies brohoof, similar to a high five.2012 October 3, HVAC [username], “Re: Bronies”, in alt.atheism (Usenet):
1 more example
Holtz is ready to get the club up and running next semester and she said she hopes more bronies will come and “brohoof,” the bronie handshake, with other students who love MLP.2013, Ryan Howe, "My Little Bronie", The Ball State Daily News (Ball State University), Volume 93, Issue 46, 7 November 2013, page 3