AN: I should probably mention that it's my personal headcanon that Arcee is fluent in French. Idk why it just came to me one day.

Knockout was on his computer in the med bay, trying to figure out how to stabilize the new strain of synthetic energon Ratchet had created. He sighed and stepped back from the computer, exhausted.

"Ugh, what I really need right now is a tire rub," he said to himself, rolling his neck. He shut off the computer and exited the med bay, heading for his berth.

"Oh, Knockout~"

Knockout stopped in his tracks and grinned. He was never too tired for Arcee.

"Ah, guten abend, mein schatz," he said, turning to face the blue femme leaning against the wall, "Have you come for another German lesson?"

"Au contraire, mon chéri. C'est tu qui v'apprendre ce soir," Arcee replied, grinning mischievously.

"Since when did you speak French?" Knockout asked, raising an optic ridge.

"Non, mon chéri. Ne parle pas anglais. Just français."

"What?"

"Exactement. Maintenant, ou est-ce que nous avons été?"

Arcee stepped closer to Knockout and slowly trailed her servos down to his waist.

"Oh, I see how it is," Knockout said, smirking at Arcee.

"Non, tu ne vois pas," Arcee replied, grinning wickedly.

Knockout barely had time to look confused before Arcee launched a merciless tickle attack on him. He squeaked in surprise and dissolved into a fit of laughter, writhing and kicking.

"Arcee…stop…please!" he wheezed in between giggles. Arcee ignored him and continued her attack, greatly amused.

"Ceci mon revanche," she said, increasing the intensity of her assault of tickles. Knockout was at her mercy, and Arcee was enjoying every second of it. She hadn't actually known that Knockout was ticklish, she just took a guess and went for it. But now that she knew he actually was this ticklish, there was a 200% chance she would be taking advantage of it in the future. Arcee finally stopped her ruthless tickle attack, grinning at the sight of a thoroughly exhausted Knockout lying on the floor. She bent down and kissed him lightly.

"And that concludes our leçon du français. Same time next week!" she said, sauntering away. Knockout just lay there, bewildered and slightly embarrassed.

"Ach, that femme is going to offline me one of these days."

AN: It's done. It's complete. Finally. Good Primus this took far too long.