A portmanteu of man and maintenance. Usually refers to the unspoken maintenance tasks some men perform or actions taken by a woman to keep her boyfriend.
Man I feel great after some mantenance today, shavedsome body hair.
She has totally been slacking on her mantenance sex I am so gonna break up with her.
By Natividad
Mantenance
1) A necessary, completely spontaneous, and very short masturbation session required to maintain mental stability.