That one dick that if you messed with would lead down the slippery slope to more dicks.
"Dude, I would totally such my own dick if I could. I mean it's not gay if it's your own dick."

"No way man! I'm afraid my own dick would be the gateway dick."
by BCHam February 18, 2016
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The dick that leads down the slippery slope to more dicks.
"Dude, I would so suckered my own dick!"

"No way man! My dick would be the gateway dick!"
by BCHam January 27, 2016
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