Top Definition
A very sexy guy who co-starred on the hit youtube show "Is It A Good Idea to Microwave This?" The mere mention of his name can make women want to be impregnated with his babies. Every girl and the occasional male wants to have a Riley McIlwain if not then they haven't witness his totally awesomeness.
"Hey did you watch Riley McIlwain on youtube last night?"
"Yeah, I want to be impregnated with his children."
"Dude, you're a guy."
by totallyawesomechick January 06, 2012

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