"Odaso" is a contraction of the German words "oder" and "so" which together mean "or so." The term is most often associated with sleazy immigrants when asking for money. The term is used when asking for a firm amount, which, however, to appear polite, is followed by "odaso." The term is common among bouncers, vendors, and thugs, but is also used in ordinary situations.
walking into a bad party, once spotted by the sleazy host:
Host: Hey, what do you guys think of the party? Not bad, right? Hey, do you have $5, odaso?
ordering food from a kebab stand:
Vendor: Ok, altogether that's $4, odaso.