Quote from Robin in The Sexless Innkeeper
Ted: Wait, you're saying that girl just used me for a place to crash?
Barney: Ted, you mentioned that you live right upstairs. She saw the tweed jacket which basically says you're not interested in, nor probably even capable of, having sex. And she thought, "Hey, free lodging."
Ted: No way. I'm not the sexless innkeeper.
Barney: Ted, that girl had no intention of ever hooking up with you.
Robin: Which is funny, because usually it's the innkeeper who offers turndown service. Oh!