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Having an extra sex partner. Having sex with a friend as in friend with benefits while in a relationship with someone else.
I like fucking him on the side, just like I like ordering my salad dressing on the side.
by Frisco Stories August 12, 2008
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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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Having a sexual relationship with a person outside of one's primary, emotional relationship.

See, mistress.
"Hey man, I heard you were getting a little action on the side! Did you nail her?"
by Nathan V. August 07, 2008
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weekend, the days on the sides of a calendar i.e. Saturday and Sunday.
Person 1: Hey what're you doing on the side?
Person 2: I'm going to Lake Taho with Matta dn Jess.
by Nikkola March 06, 2005
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