To be acting in a silly manner, especially so by completing a task in the least efficient, most idiotic way. Derived from the slang "mickey mousing", which was used to describe when someone would do something using the improper way, material, or method.
Yo guys I totally moused that math test, You just add denominators straight across, right?
Hey, sorry I can't come to the party tonight, I'm in a mousey mood.
Look here buster, you are one hair away from an ass whooping, so you better stop mousing it ASAP.
a cartoon with 22 results on rule 34
Cartoonaboo: 12 oz. Mouse SUCKS ASS
Son of Ben the Rat, made by Fastgod on the indie site Gamejolt
You know that OC Marshall the Mouse?
A person from Chicago and Chicagoland suburbs who is delicate, refined, and nimble
The chi-city mouse
The act of sticking a woodwind instrument up to your genitals and playing.
I walked in on Johnny giving Jaxon a moist mouse
When your girl is so amazing and sexy she/he is always happy bubbly out going and loves kids show
Damn your girl is so mystery mouse contul