A very muscular butt that is lacking in roundness. The person who has a horse butt is very physically fit, but their butt does not make you say "dat ass".
by manhole13 November 4, 2013
When someone fucks a horse and then the horse fucks them then the person who fucked horse pulls a 10 foot dildo out there fanny pack and fucks themself and horse with it and then the horse cums in there but they also like it
by Brodie like horse dicken butt September 23, 2019
by Vala187 December 27, 2021