Its a company that makes the cinch that straps a bull’s nuts to its belly and makes it buck. The dad is probably in the business or rides or something cowboyish.
Having lived in the Great State of Texas, I know them cowboys are tough as bailing wire.
But even up here in DuPage County, I don’t know about wearing a shirt like that one! I kind of like the windows on my truck to be without major cracks.