herding cattle
A sexual euphemism by a cowboy toward any damsel
"Howdy there ma'am, would you happen to be in the mood to mosey on down to the inn and go herding cattle"
herd the cattle
Herd the cattle is when you finish in a condom then snap it like a whip on your partners ass, typically but not specific to, when in an orgy.
Dan pulled out and started to herd the cattle. Everyone went with it and started mooing.