Well, that was something Birkin wasn't expecting. The scientist sat there, completely dumbstruck and stiff as a board, not really sure how to react. How the hell did he even get himself into this? That bed had better be worth all this... He clasped the collar of Stein's labcoat, slowly starting to kiss him back.

Birkin broke the kiss a few moments, blushing madly. "So... Where's that bed you promised?"