The doctor had been poisoned. He was stumbling across the kitchen in a silly manner, demanding stuff and shoving liquids down his gullet. He gestures broadly

"Surprise! I need a surprise"

You suddenly kissed him very suddenly. The two of you stumbled around the kitchen before he pulled away and exhaled out the poison like a dragon but less cool

"Ooh, need to do that more often. Not that. The detox. I need to do the detox more often."