Warning: This story will make you laugh and cringe at the same time.

As the saying—made famous by American Pie—goes, "One time at band camp." Fortunately, Jennifer Garner has her own

Warning: This story will make you laugh and cringe at the same time.

As the saying—made famous by American Pie—goes, "One time at band camp." Fortunately, Jennifer Garner has her own version of the signature tale.

"I went to band camp," she confirmed. "Somewhere in the hills of West Virginia, my band was lined up the first week of August in parade formation and learning our beginning steps."

"We did have a 'One time at band camp' situation," she revealed. "This is late at night, correct? Good, my mom's asleep."

As Garner recalled, a fellow bandmate was a brass player who was having her own "first experience" with a fellow musician.