A snake balloon
You take a snake, stab it, and use it as a cum tube. After a while, the snake gets so full of cum it looks like it’s about to pop, just like a balloon.
My ex used my snake as a cum tube. Now it’s a balloon and it’s leaking on my floor.
I took my snake to a party and it came back as a cum balloon.
That snake used to be my friend. Now it's a cum balloon and I hate it.