A semenator is extreme good at ejaculating a lot more semen than the average human. Basically, anyone that you know that puts out enough to fill a glass is definitely a semenator. Can also be used in relation to liquids of mass amounts, see examples.
1. My ex-boyfriend was such a semenator.
2. Dude, that guy's sprinkler system puts out so much water, I'm not even sure why he hasn't won the semenator award yet.
3. I wish I was a semenator so I could have kids.
by lonely188 August 02, 2006
One who emits ridiculously large amounts of semen after sufficient stimulation to his manhood. Does not mean he has a large didgeridoo or is immune to the feared premature ejaculation. Not too much is known about semenators...
Don't you love it when a huge load bursts all over onto your face? Good god I love semenators!
by LeFreddy September 01, 2010
A semenator is kinda like a Squirmanator except probably not as cool. A semenator is extreme good at ejaculating a lot more semen(sperm) than the average human. Basicly, anyone that you know that puts out enough to fill a glass is definitly a semenator. Can also be used in relation to liquids of mass amounts, see examples.
1. My ex-boyfriend was such a semenator.
2. Dude, that guy's sprinkler system puts out so much water, I'm not even sure why he hasn't won the semenator award yet.
3. I wish I was a semenator so I could have kids.
by lonely188 August 01, 2006

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