When a dude freezes a large amount of his semen until it's like snow with frost around it, and then you make semen snow angels in the frosty frozen semen.
"Let's make some semen snow angels."
"Me and my Hoemie are bout to make some semen snow angels."
"How about you come with us to make some semen snow angels the cum is freshly frozen."
"Damn Michael got a bunch of semen snow did you check the freezer?!"
"I'm surprised he made semen snow with all that cum he coulda had a whole batch of semenscicles."
"You see all that semen snow he got? I wonder what he gone do with that."