Actually a common occurence for most men. When a sudden erection springs up in a public place and the boner's owner can do nothing but flip it up. "Clipboarded", if you will, against the body by the waistline of the pants.
"I was in Italian class and goddamn, that Signora Mazzoni, she made me pop a boner. It was so obtrusive, I had to clipboard it."
by Berry December 17, 2003