Top Definition
14 year old Mexican girl also known as the brown streak in roller derby.
Mexlax is a great roller derby girl!
Mexlax will beat the crap out of you!
by damncat December 23, 2011
1 more definition
When you are constipated and need the help of Mexican food to clean out the pipes
"Hey John, you want to go to Taco Bell after class? I need some Mex-Lax, I'm a little backed up."
by LarryChicken December 12, 2011

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