The pair tashed on as part of a truth or dare game that also saw Tiffany smooching with Jeremy McConnell before later opening the shower door while Scotty was inside to, um, have a look at his invitation.
"Oh my gosh, it's big. Scotty that is huge! That would blow my back out. That would make me cry," she said.
"Oh you're nice. I like your body. Oh, I want to bite it!"
Speaking on Bit On The Side, Megan – who had a flirtatious relationship with Scotty in the house and shared a few kisses – admitted it hadn't been the easiest viewing.
"I'm not going to lie, when I had to watch that I did feel a little bit uncomfortable and a little bit disappointed," she said.
"I've only been gone a day and my bed is still warm! Obviously she is just very horny and is coming across very desperate. I don't care about the game, it's truth or dare, I did it on Ex on the Beach numerous times and it was fine.
"But I do think the shower thing… did she touch his d**k or not?!"
She added: "Scott is being Scott, I knew he would be like this. This is why we're not making anything of it, we're just having fun. We have a good summer planned but I'm not going to lie, I was a bit disappointed watching that."
Megan later took to Twitter to clarify: "And btw i never said scott did anything wrong! We are flirty friends who really get along! And I'm rooting for him to win!! #scottyTtowin (sic)."
She was the fourth celebrity to be evicted from the show, leaving the house on Friday night.
CBB continues tonight at 9pm on Channel 5.