snugsual intercourse

The fully-clothed dry humping that occurs when both parties are too cozy, warm and comfortable to stand getting undressed or throwing off blankets, often culminating in interlocked mutual sleep.

"So did you and Jen get hot and heavy last night?"
"Nah, once we got in from the snow and into bed we were both too cozy to bother. We just had snugsual intercourse instead."