Mexicanoing the shit out of something is a sentence used( typically by Hispanics/Latinos) when working on a project (that would normally take the common folk hours to complete) in order to ease the amount of time said task is to be done.
Mexicans are said to be hard workers, therefore the term "mexicanoing the shit out of something" is commonly used as a way to imply that things need to be done in a rapid manner.
The dishwasher at the restaurant quit in the middle of service therefore Junior and Ellis are going to be Mexicanoing the shit out of something (the dish pit) at the end of the night
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.