>>44536395This.
Gauge his/her interest in Pokémon and respond appropriately. If he doesn't care/know much then don't say much otherwise you'll just come off as a creepy weirdo.
example:
>Yeah.. I remember pokemon, wasn't that a 90's show with Pikachu and stuff?If he/she is into it as much as you are, only then can you blow your load and reveal your final form.
example:
>I have a 15/15/15/15/15 DV spread on my shiny level 100 Tyranitar in Pokemon Crystal that also knows a unique event and egg move