mexican pony
A large dog that the little bambinos take rides on while their saggy, crap-filled diapers leak all over the poor, tired dog.
Maria's kids wanted a pony for christmas, but since she lived in an apartment, she was only able to buy a mexican pony for her kids to abuse.
Mexican pony ride
You go to the dog pound and pick up the sexiest and largest dog they got. Then bring it home and vaseline its poop chute up and rape it.
I got laid off at work and was feeling down so I invited some friends over for a Mexican Pony ride.