noun/verb: A wet spot left on the under garments by a male or she-male approximately the size of a dime, created by post urination or ejaculation leakage from the penis. Can also be created from the clap. Coined by an unknown philosopher Sean O'Brien, born in the 82nd year of the 20th century. Named after the American dime, because of its size and also because Truman was a dick.
After a man urinates and places his penis back into his under garment, some liquid can still leak out and absorb into the fabric creating the dime-spot. Can also be created thru pants only when a man does not wear an undergarment, i.e. going commando, freeballing, hanging, and shore-leave; referring to Navy sea-men hanging out when into port. If the dime-spot is significantly larger then a dime, one can be sad to say, "I pissed myself!"