Barney: "I only smoke in certain situations. Postcoital, when I'm with Germans, sometimes those two overlap, coital, birthdays, to annoy my mom, precoital, on a sailboat, the day the Mets are mathematically eliminated every year and pregnancy scares."
Ted: "Why are you smoking right now?"
Barney: "I'm always precoital, Ted."
Ted: "She was 15?!"
Barney: "No. A 15. Like in blackjack."
Ted: "As in.. not sure whether you'd hit it?"
Barney: "Exactly!"
Ted, the only reason to wait a month for sex is if the girl is 17 years and 11 months old.
SexBarney Stinson in How I Met Your Mother, Season 1 Episode 14