Can you identify this tool?

I remember working the gas pumps at a gas station here in town...24 cents a gal at that time. Punched many a can with that thing!! But most folks were poor and wanted the "Bulk" oil which was much cheaper out of this big barrel.

Best part about the job as a teenager was late Friday and Saturday when the strip dancers were getting off of work and come in for gas. They wore super short skirts and we would fight amongst ourselves to see who would get to clean the girl's windshields to look down the short skirts....OOPs, did I say that out loud????
I swear those girls had the DAMN cleanest windshields in the whole city..LOL!!