Three men are sharing a sauna together.  All of a sudden, they hear a beep.  One of the men gets up and summarily leaves the sauna.  When he returns he explains:

"Sorry, it was my beeper.  I had it implanted in my arm."

Soon thereafter, they hear a phone ring.  The second man excuses himself and walks out.  When he returns he explains:

"Sorry about that!  It was my cell phone.  I had it implanted in my palm."

All of a sudden, the third man gets up and leaves.  He returns shortly thereafter.  As he makes his way back on to the sauna bench, the other two men notice a long piece of toilet paper hanging from his behind.  Observing the glares he explains:  "Sorry guys; I just had a fax come in!"