Thought of a scene that might appeal, and I can't think of anyone else who could animate it properly, the title is "Gorey Hole." Two females enter a bathroom stall with a glory hole carved out. Both are eager to play, and a few seconds later a cock pops out. The first, obviously more dominant or the two, guides her friend down to her knees. The friend starts worshiping the cock properly, kissing the shaft, suckling the balls, etc.

The guy on the other side, is pleased, and gives the girl a surprising reward, pulling the cock back; and inserting a silenced pistol barrel through instead. The two girls are shocked, but not driven away. Instead the previous girl who was sucking obediently pleasures the gun with her mouth; sensually licking it and deep throating it.

The dominant friend holds her head steady; and watches her friend get the back of her head blown off. Still holding the now hollow skull of her dead friend, she watches the guy push his cock back through the hole; into the dead girl's mouth and out the back. The second girl then suckles the tip as he literally skull fucks the dead girl with the shaft; until he gives the dominant friend a messy facial.

Optional: Once the dominant friend is properly facialized, she pulls her dead friend's skull off the cock and french kisses her for a bit. Meanwhile the guy retracts his dick again, this time he puts a shotgun through the hole. The dominant friend is too busy making out with her brainless buddy to notice; and as she breaks off the kissing to admire the blank stare of her friend, the guy blows her entire head off.

Closing shot is a slow pull back with the two in a naked heap in a pool of blood. The guy comes out of the stall, we only see his lower torso, from the stomach down. As he walks by the open stall with the two dead girls; he shows casual disrespect by tossing a few dollar bills on their bodies before walking off screen; before fade to black.

Anyway, just an idea to throw out there that seemed the level of detail, complexity and bit of story about it that was in your wheel house. How this inspires a bit of your next work. Regardless, you're awesome!