An imaginary time during the month when the cycles of the moon cause a man to be bitchy and irritable. Directly related to a woman's pre-menstrual cycle, a woman can ask a grumpy man whether or not he's on his 'mancycle'.
by cherryghosts November 13, 2010
When a man is so robbed of nutrients that he resorts to ejaculating in his own mouth, for the little value it has.
"Oh man, I was watching the discovery channel and some guy was mancycling because our aid didn't get there soon enough"
by The one and only, Olgiz. January 22, 2010
John: Culo Verde! Look at that guy riding his bike down the street!
Sue: You mancunt, only a mancycle can ride like that!
John: Lick my fronton!
Sue: You mancunt, only a mancycle can ride like that!
John: Lick my fronton!
by Faber July 28, 2006