Justin Timberlake was left disgusted during one awkward fan encounter when a male devotee tried to shake his hand immediately after using a urinal.

The SexyBack hitmaker was making a quick toilet stop before going to see a movie when he was approached by the unhygienic fan.

He tells GQ magazine, "I was at the movies this one time, and I was going to the bathroom right before I went into the theatre and this guy, as he was walking away from the urinal, zipping up his pants as he turns, recognises me, gets all excited, and makes a beeline for me, his arm out, looking to shake my hand.

"Listen, I'm not a germaphobe, but c'mon. I literally said to him, 'There's NO way you're not going to wash your hands before you try to shake my hand.' You just had that hand on your penis."