Umm, I think generally we mean with a partner you get on the plane with, not someone you flirted with and smiled at... (knocking them out with chloroform does not count as flirting BTW).
Check it yo. When the plane is on it's way up, listen for a beep before the 'fasten your seatbelt' signs turn off, and look at the attendants. If they are up and about, it is safe to get up. The sign is still on so that they can do their shit without passengers getting in their way or trying to flirt with them. Make sure your partner knows which toilet you're in, and tell her to wait a minute or two before following you in. On the way out, get your bitch to lean forward holding her stomach, if you are spotted say she was violently sick, can you have some water please, and return to your seats. This be how dat shit goes down, homies (taken from a book, not experience yo)
SS4