Summary: "Ooh, please do!" is essentially Remus's catchphrase. He likes to just pop up randomly and say it to one of the other Sides, or Thomas, or just say it in an empty room with no one even there to hear him. There is, however, one exception.
Having recently looked through all the Sanders Sides videos, Logan was deliberating the merits of a possible action. Looking up at Roman, who happened to be the only other one in the living room at the time, Logan asked, "Should we explain to Patton what 'adultery' actually means?"
Rising up, Remus said, "Ooh, please do!", then immediately sank out again.
"Well, there's your answer, I guess," said Roman. "If my brother says to do it, you know it's a bad idea."
"I suppose so," Logan said. "The fanders do seem to find his misconception amusing, after all."
A few days later, Patton was musing to himself, "Cookies or brownies?" Everyone knows, of course, that choosing between cookies and brownies is a very serious matter, and requires much thought. "Hmm. I think I'll make brownies," he decided.
"Ooh, please do!" said Remus as he rose up, only to instantaneously sink back out.
Patton called after him, "Are you going to try to put deodorant in them while my back is turned? Virgil told me you did that to him once! I'm watching!", but he was met with no answer. Shrugging off the random interjection, Patton began to make his brownies.
Later that same day, Roman was practicing with his sword in his room, pretending the Dragon-Witch was there fighting him. (She would have been, but she still hadn't reincarnated from the last time he'd killed her yet.) "Feint, parry, lunge, remise," he muttered to himself.
Suddenly, Remus was there, gracelessly whacking Roman's sword away with his mace. "Ooh, please do!" he said. Roman glared at his twin, but Remus sank out before Roman could say anything. Shaking his head, Roman retrieved his sword and returned to his activity.
That evening, Logan reached for a book on the shelf. Remus rose up, saying, "Ooh, please do!" Logan sighed and picked up the book as Remus sank out.
"I wish he'd make sense every now and again," Logan said to himself as he flipped through the pages to his bookmark. "Oh, well."
A couple days later, Patton heard the words, "Ooh, please do!" He looked into the next room over just in time to catch a glimpse of Remus sinking out.
"...What?" Patton said, but there was no one there to explain.
The next Wednesday, all four main Sides were in their living room, each doing his own thing. Roman was scribbling rapidly in his sketchbook, most likely creating some outlandish creature or a frivolous fairy-tale type palace. Logan was reading The Tempest, because Roman had suggested he try to understand theatre and Shakespeare had seemed like a good place to start. Patton was knitting a blue hat. Virgil was doing something on his phone.
Remus popped up and said, "Ooh, pl-" but froze as soon as he saw Virgil. Silently, Virgil reached over, covered Patton's eyes with his left hand, and stuck up his right middle finger at Remus. Lowering his right hand, Virgil removed his left hand from Patton's eyes and raised four fingers. He put down one, then another. Remus hurriedly sank out.
"What was that all about?" Roman asked.
"Oh, Remus a long time ago learned his lesson about doing his stupid catchphrase thing to me," said Virgil, then looked back down at his phone as if nothing had happened.
"...I have several questions," Logan said.