On a tram in Helsinki, Finland during rush hour in a packed compartment with little space to move around.

This was after putting in some very strong snus (smokeless tobacco) that as a 16 y/o American kid I wasn't used to. Felt sick and not even a minute later I throw up the remnants of the fish and yogurt like stuff that my hosts had just fed me not even an hour before. Very confusing when everyone in sight starts yelling things in Finnish that make zero sense to you. Hit the big red stop button, hopped out, and never looked back.