It grew back!

J3PO- "I lost my virginity when I was 18"

El Pollo Loco- "I didn't lose mine 'til I was 20."

J3PO- "That's when I got mine back..."

Evolution

El Pollo Loco- "I think there's something wrong with you. Your shit smells like Starburst!"

Captain Happy Pants- "No. I think I'm just evolving. In the future all humans shit will smell fruity. You're just jealous cause I'm a superior being."