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When a prude dates a non-prude and succumbs to the idea of some sexuality in their relationship, accidentally causing a sudden eruption of their own pent-up horniness. The word is derived from the lusty Greek god of love and horniness "Eros".
Wow, that prude's undergone some major erosion!
by Patnode September 02, 2006
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May 14 Word of the Day
Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy
Person A: Man, that nutcase Martin Bryant guy shot 35 people in Tasmania!

Person B: No, he wasn't a nutcase, that was just a psyop so the government could have an excuse to ban guns.
by Mystikan April 11, 2006
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2
When a Girl sucks your dick so much and so hard that it actually shrinks
Bro that girl just gave me an Erosion last night
by Sousaphone Nibber August 24, 2018
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