A lashup is a method of setting something up, usually to be tested in a quick, and usually "less propper" way. Instead of enclosing all the parts of things etc, parts are merely hardwired together in a way that they will work, if only temporarily.
"Are you gona finish that thing?"
"Nah, im gona do a lashup first to make sure it works"
1. An unidentifiable residual build-up usually found at the bottom of outdoor trash recepticals. Cannot be calssified as animal, vegetable nor mineral. Commonly brown/chunky in apearance.
2. Common term applied to any mystery substance deemed to be of questionable origin or considered harmfull.
1.Ah fuck, there's smunge on the doorknob!!
2. SHIT!! I GOT SMUNGE ON ME!!!