A Waterfall
When a guy is getting sucked off and the cum starts dripping out of her mouth and lands straight on his cock like it's the most embarrassing thing ever.
My man got caught mid-suck and his cum dripped out like a leaky faucet.
She was so busy sucking him, she didn't notice the cum pouring out of her mouth.
He was trying to be quiet, but the cum waterfall was louder than his moans.