The act of getting sexually aroused from participating in and/or watching debate. This can be any debate, whether political, religious, or who should be the designated driver after everyone gets shitfaced on vodka.
Ricky: Why the fuck does Tom always whip his dick out and start fapping away whenever a presidential debate is on?

Jack: He's masdebating. He has a fetish for debate.

Ricky: Ah, I see. Excuse me while I go throw up about something else.
by FUCK YOU I'M A WIZARD October 5, 2013
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Verb: 1. for a group of people, usually in an internets forum, to argue on the same side of a subject. The purpose being to purport more knowledge on the subject than the other people.
2. To be a bigger know-it-all than the other guy.
anonymous 1: ther's no medical fact that marijuana is dangerous for your health
anonymous 2: alcohol is like 10x more addicitve than pot, but it's legal... why????
anonymous 1: There's absolutely no reason, at all, that weed should be illegal. It's a thousand times less dangerous than alcohol and tobacco, yet those two are available at the store.
anonymous 3: wine is actually beneficial, but alachol abuse kills more people than marijuana ever has.
anonymous 2: Yes, crime is bad and does kill, but I don't directly blame that on Marijuana. Criminals are always going to find cheap, dangerous ways to make money. If pot were was gone, they'd find something else. There are plenty who either grow for themselves, or don't feel the need to play cowboy with the cops and gangs.
anonymous 4: enough masdebate! MOAR RACCOON PORN!
by SMcG December 22, 2008
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Deciding whether or not to masturbate for an extended period of time, mainly used in whether or not knowing if you have enough time.
Johnothan masdebated while his parents were going to the store.
by Mr Union January 13, 2012
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