A white guy walks into a bar after a hard day of work and buys himself a
beer. He holds it up and says: "T-G-I-F!"

A Mexican guy sitting next to him buys himself a beer and
says:"S-P-I-T!"

When the white guy finishes his beer he buys another one and yells the
same thing: "T-G-I-F!"

The mexican buys himself another beer and yells again: "S-P-I-T!"

After his second beer, the white guy buys another and says
again:"T-G-I-F!"

The mexican orders his third and says once again, "S-P-I-T!"

The curious bartender asks the white guy what T-G-I-F means, and the
white guy says, "Thank God It's Friday."

Still curious, he then asks the mexican guy what S-P-I-T means and the
mexican replys, "Stupid Pendejo, It's Thursday."