Hahaha... I usually just keep to myself, even when a debate presents itself. Religion/personal views are just too personal to an individual to just sway an opinion on the spot.
If I had to pigeon hole myself I'd go with
Apatheist- acknowledgement that any amount of debate can neither prove, nor disprove, the existence of one or more deities, and if one or more deities exist, they do not appear to be concerned about the fate of humans. Therefore, their existence has little to no impact on personal human affairs and should be of little theological interest.