Slang for porn or a porno, cause in Roman Numerals, 30 is said as XXX which usually refers to porn.
I'd love to make a Roman 30 with you!

Let's watch some Roman 30 together!
by golfcartgangster June 23, 2019
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30 Romans is 30 in Roman numerals, which is XXX which is porn
Me: what are you doing?
My friend: I’m jacking off to a 30 Romans video
by xkan March 21, 2018
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