what will あなた react?

Don't know, im a guy so i tink it a gud tin 2 b kissed によって sum1 i dont know c:

i'd give hugs and kisses back but reluctantly....
and in my mind i'd be thinking "who the frickin' hell is this person?"

I would be shocked but I would give hugs and kisses back because maybe they just needed to be comforted または else they are just doing it for the fun of it. but at the same time I'll be thinking 'What is happening?'

I would hug and キッス them back cheerfully as if i had knew this person my entire life ^ ^
and then id say, thanks i really needed that O__O

yuck

Well, if it was another guy, I would push him away and get out of there fast.
If it was a gal, I would accept the hug, but stop her from キス me. I would ask if she had me confused with someone else.
Hugs are ok, but kisses あなた have to be もっと見る carefull about. Who knows what あなた could catch from a stranger?
Now, if the gal was a real knock out, I might forget my rules and just go with it. :P

雌犬 slap the person.
ಠ_ಠ Sneaking up on me like that...

Hug and キッス them back, then ask them how they're doing and start a conversation with them as if we were best friends. xD