Top definition
When a boy (in the mental sense) goes through a dramatic transformation to become a man's man.

This may or may not involve things like working out consistently and losing weight, learning to finally respect what women have to say, spending thousands of dollars on a new wardrobe, and sporting a pair of hipster glasses.
Wow, if Paul never had his manissance, he might have died from playing StarCraft 2 all day long.
by theliuman July 03, 2014
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug