Bulling. Sometimes there's a cow in heat that all the bulls want (applies only to herds where producers run more than one bull in), and mistakes can be made if the mating gets a bit intense between that one cow and multiple bulls who are all too intent on getting her bred. It is also found to be done in steers, usually when they are crowded, but also if there is a weaker animal in the herd that the more dominant steers feel the need to pick on all the time.
The slang term for a cowboy is "HICK"
Not cowboy slang. Overalls are another name for work pants.
posse
Trout ropin
OK is a slang word, and cowboys used it.
tough hombre
"Awesome!" or "Fantabulous" or "Sweet."
Cowboys loved a colorful phrase! This meant a cowboy's bedroll. It hinted that a cowboy would have fleas.
All tied up
Cowboys loved a colorful phrase! This is cowboy grammar for "might be able to." "I may can come to the social," said the cowboy.
As far as I know, they're called Bull riders.
Growling, rumbling, etc.