Used in a similar context to "Jury Rig", although more common in areas with a significant population of Mexican immigrants to describe a sometimes comically low-tech, but nevertheless effective method of fixing or building something. Often characterized by quick fixes that can cause new problems, which are them quick-fixed and so on.
The car's doors were different colors, The mirrors had been duct taped back on, and the body had been welded together in several places. I doubted the car had been serviced in 10 years, but somehow kept going thanks to Mexican Science.
We didn't have a recording studio, so we recorded by jacking our amps into a mixer and recording onto the audio track of a VCR. (A scenario which can be described as Mexican Science)