Two drunks realize that they are sobering up and only have $1.25 between them. So, they buy a hot dog from a hot dog stand and go into the next bar.
They do shot after shot until the bartender demands that they pay up. The drunk with the hot dog opens his zipper and puts it through the opening. The other drunk gets down and starts sucking on it. The bartender throws them out.
The drunks go to several bars with this routine until they are beyond drunk.
"Man," one of the drunks says, "that hot dog trick worked great."
"Actually," the second drunk says, "I ate the hot dog at the second bar."