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1.
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
 
2.
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