1 definition by Mingegash
When a girl with pimples is giving you a blow job, pull out of her mouth as you are about to cum and let it go all over her face.
"You know that girl Stacy?"
"The one with all the pimples?"
"Yeah, I gave her a Rough Custard last night."
"The one with all the pimples?"
"Yeah, I gave her a Rough Custard last night."
by Mingegash March 13, 2014