An invention made by a man for women. Typically ridiculous in nature, have shitty product reviews, and result in money loss/bankruptcy.

Example: Bluetooth Tampons, Bic Pens for Women, penis envy pills
**Child points to screen** "Mom what's a Bluetooth tampon?"
Mother: "Oh God, not another Manvention. I thought we were passed this!" **Changes channel with dismay**

Guy: "Hey babe, I got you some Bluetooth tampons."
Girl: "Get your shitty ass Manvention out of my face Henry!"

Girl 1: "Did you hear Morgan is in the hospital?"
Girl 2: "No, what happened? Did she have the baby?"
Girl 1: "She bought that Manvention off of kickstarter, stuck it up her vag thinking she'd be able to talk to the baby."
Girl 2: "Is she going to die?"
Girl 1: "Prolly."
by @amandabohbanda July 14, 2016
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