Shwap is alcoholic beverages (can be a singular or plural term); so, if youre going to buy some shwap, you're going on a beer
run.
To BE shwapped, is to be extremely drunk.
New closely related
words have been derived from it, including SHWAPTASTIC, a term used when someone does something fantastic when theyre drunk. it therefore becomes shwaptastic. Some
people play with the word and say shwippity shwapped or other
silly things. but you get the picture. this word came from the wonderful city of Manhattan Beach, California. We are the founders :)