Woman: What's this?
Robin: Oh, God.
Barney: Only the best thing ever. Let's say you had a wonderful night with a girl, but now she's turning into a bit of a morning-after pill.
[flashback to Barney disappearing into the floor in his kitchen. Outside, a suited-up body falls out of a chute and lands hard on the ground, horrifically injured:]
Barney: See? We need to extend the chute and add a landing spot. And you said testing it with a dummy was a waste of time.
Ted: No, I said "dressing the dummy" was a waste of time.
[present:]
Barney: The Escape From Bitch Mountain by Stinson, patent pending.