1323 B.C.: King Tutankhamen is buried with 145 loincloths
1764: The spinning jenny, which dramatically reduces the time it takes to produce yarn, allows the mass production of cotton underwear
1868: The union suit debuts, followed by its soon-to-be-infamous "fireman's flap"
1874: The jockstrap is invented to support Boston cyclists riding on cobblestone streets
1909: Robert Peary plants an American flag at the North Pole wearing custom-made underwear, sewn by his wife, with special pockets to keep his navigational instruments warm
1915: Frank Stanfield patents the "long john"
1935: Coopers Inc. (later renamed Jockey) sells the first pair of tighty-whiteys
1983: Risky Business
2000: Pull-In Underwear sponsors action-sports stars who pull out their boxers
2009: Undies go philanthropic with designer Yves Behar and PACT: Now you can shop for underwear by causeoceans, forests, or literacy. wearpact.com