A slang term eluding to the involuntary tail waving motions by some stallions during ejaculation. The term later resurfaced later as a slang term to describe a mare with her tail pulled back provocatively.
MOYOS & MOMOS are short for “Members Of Your Own Species” and “Members Of My Own Species“. It has become prominent on the internet through interspecies Dating. The Opposite is MOADS or “Members Of A Different Species”.