Winehouse Suspected of Giving Headbutt

Amy winehouseDon't be fooled by Amy's tiny frame -- that beehive has some sting.

Scotland Yard tells TMZ they are investigating an incident in which the Weaved Wonder allegedly headbutted a 38-year-old guy in London. According to the Sun, the man's offense was hailing Wino a cab. The nerve!

Maybe she misses her hubby in jail and was looking for a way in.