My kid brother comes up to me and says, "Yo, big L, I can't fill up my bitch."
I say, "Okay, pencil-dick, you've come to the right place. What you need is the Hot Rod Enhancer. It'll increase your girth, and that'll bring a smile to the scrawny piece of chicken you politely refer to as your 'bitch." "How's that possible, Knower Of All?" he asks, blinking innocently.
"The tiered ridges of super-stretchy senso-material really make a dif, stupid," I reply.
The next day the freckle-faced punk comes over all happy and says, "Guess what, Big L, that Hot Rod Enhancer really worked. I fucked my bitch, I mean girlfriend, and she shrieked Oh God, you're so big the whole time I was inside her."
"Excellent, little buddy. Hot Rod Enhancer gives your shaft that extra big thickness you need, and it's transparent so no one will know you're wearing it -- except you and God Almighty."