A gentleman's shirt, typically his most expensive and alluring, which is saved for occasions when he so wishes to maximise his chances of partaking of sexual intercourse with a woman.
Me: "Hey Dave, think you might score tonight?"
Dave: "Definitely. I do have my riding shirt on in all fairness, I'm guaranteed to hook up"
Dave: "Definitely. I do have my riding shirt on in all fairness, I'm guaranteed to hook up"
by mavrick1579 March 3, 2011