...Natasha, the exchange student in your biology class who came from Saint Petersburg last year.
When she had just joined school you had quite the crush on her, but it had since subsided after you had learned she had barely known any English and was way too serious about studying and schoolwork to have a serious relationship with anyone. Yet, here she was, down on her knees, her beautiful green eyes filled with lust, and her long fingers, tipped with her signature red nail polish, delicately rubbing off your dick.
Slowly, she started sucking you off with her luscious lips, covered in red lipstick. She grabbed your thighs with both hands, and then deepthroated you, to which you reacted with a loud moan, and grabbed her hair- which was now shoulder length and chocolate brown.
She pulled her head back, parting with your dick, saliva dripping from her mouth. Then, raising her glance and looking you in the eyes arrogantly, she commented in a husky voice with a heavy Russian accent: "ммм, твой член на вкус лучше, чем я ожидал. I hope is enough for you... allowing me copy on exa-", upon which you released your semen, filling her open mouth with your sperm.
"I hope I do vell on... what you Americans call it? Blo-job?", replied a smiling"Natasha". You had never seen the real Natasha smile, so this was a beautiful first sight.
"Damn babe, that was sexy. I can't believe you could mimic her so identically.", you exhaled as you sat down on the sofa you were gaming on moments before.
"Thanks, hon! I had a pretty good time myself..." your shapeshifting girlfriend's original voice left the lips of the Russian immigrant with no trace of an accent, "So... what now?"