Sleep
"It's time to go to sleep, girls."
Professor Utonium ushers the Powerpuff girls to their upstairs bedroom after managing to pry them off the living room couch. Blossom and Bubbles are exchanging goodnights in the form of uncontrollable yawns in their exhaustion. They slip into their respective color-coded sides and with a kiss on the cheek for each Powerpuff from their loving father figure, they are out in the matter of minutes and snoring. Unlike Buttercup, who tugs at the lapels of his pristine white labcoat, suspended above their shared bed with wide green eyes and a pout.
"I'm not tired, Professor," Buttercup mopes. "I've got all this..."
"...energy?" The Professor offers, that amicable expression that has served as a staple in her very childhood managing to still calm her nerves and warm her heart despite her aging. His chuckle is hearty and his open arms inviting. "Sleeping with me again tonight?"
Buttercup flies into his tight hold in a flash of her signature green and with an oompf the father and daughter pair are launched onto the carpeted floor.
"...Oops?"
They erupt into laughter.