Omfg, PEWDS JUST APPEARED BESIDE YOU. What do you say to him first?

I would trying to remain calm but as a professional fangirl that would be a complete and utter fail! But I would hug him and take few pictures, compliment him about something, you know the usually.

Hey.
Brofist

What beautiful nipples uh i mean eyes you have

Why U get rid Comments!?!

I THOUGHT U LIVED IN SWEDEN!

THEM TITIES BRUHHHHHH... Then, when he stares at me I do the derp face

I will first take selfie with him and then i will do a bro fist...

pewds!what's up?!

omgomgomgomgomgomgomgomgomgomgomgomg,it'spewdiepie,dudecanItakeaselfiewithyou?Thanks,canIalsohaveyourautograph,thanks,plus,you'reawesome,justlikeMarkiplier,youguysaremyheroes,you'rethebest,stayawesome:D Brofist.

I would try to stay calm as say " Hi there! "