She would not be surprised she just would bend over and would enjoy getting fucked and creampied by your cock and would probably ask for a second round after cleaning you .
If Tifa walked around in a costume like that. Then I would immediately press her against the wall and fuck her so much that in the end she can no longer stand. Tifa would be surprised to see that I have a penis. And I would press this penis into her pussy and fuck her hard. And as soon as I'm through her cervix, I release every drop of semen in her uterus ^_-