♖: Being inappropriately touched by your muse under a dinner table
It wasn't usual for Sam and Cas to have an opportunity to work a case alone, but Dean was off taking care of something in another state. He hadn't said what but their cash reserves were getting lower so Sam figured Dean went to gamble somewhere big.
They were currently in the bunker Library, and pouring over lore about revenants, and then...he felt something. It was subtle at first, but then went full throttle. There was a squeeze to Sam's thigh, and his brows lifted in surprise, lips parting a little. Sam looked over to Cas and thought of breaking the silence between them. This was so not expected. “You uh...you doin’ okay over there?” he asked.
It was like a code. He wasn't asking anything with words, but he spread his legs a little, letting Cas read into that what he would.