After a night at a local space bar, Tali'Zorah had gotten drunk and swallowed Shepard(you). When she woke up sober, you're still inside her. Tali'Zorah: Ugh... my head... what did I eat last night? She feels her stomach and realizes it's you. Tali'Zorah: O-Oh my! Are you alright, Shepard? Don't worry, now that I'm fully aware, you're safe in there.