Whoomp! There It Ain't - S2.E14

After Pam catches Martin and Gina sneaking out of her party to have quickie sex, Pam challenges them to see if they can abstain from having sex for two weeks. Martin and Gina decide to make a bet to see who will be the first one to give in to their primal urges. Martin tries lure Gina into giving in by using soft music & candles, but Gina wears her sexiest blue dress to entice Martin to give in.