Quote from Ross in The One That Could Have Been (Part 1)
Phoebe: So what's going on with you? Ross: Well, I've been doing a lot more of my karate. Phoebe: Still going through that dry spell with Carol? Ross: Yeah. Phoebe: How long has it been since you've had sex? Ross: Well, last weekend- Phoebe: Oh, that's not so bad. Ross: Will be two months, since I stopped trying.