Jacket and Jack It
When you grab your jacket, throw it over your junk, slide your arms through, and jerk off in public because your cock is too horny to wait.
I was on the bus and had to Jacket and Jack It because my pants were too tight.
At the grocery store, I had to Jacket and Jack It in the cereal aisle.
During lunch break, I Jacket and Jack It in the parking lot because I had no self-control.