Aliens Stranded in Las Vegas

Two aliens, J#*49 and Z+*18, are searching for an engine part in Las Vegas. Most of the time they are in bars and trying to find a little sex. They favor tequila and beer chasers. They try to pick up two out of work chorus girls. The barmaid demands money for their bar tab. J#*49 produces a credit card. The barmaid describes it to the two chorus girls as a mixture of Russian, Chinese and Arabic written upside down.