Reminds me of the time a donkey chomped down on my left breast and wouldn't let go!  

True story, early 1990's, apple orchard in eastern PA -  I was wearing a red sweatshirt.  Yes, it hurt.  And it left a bruise.  

As I pulled backwards, the jackass's head moved with me.  I finally had to use my hands to pry the thing off of me!

PS:  I was on a date, too! (not with the mule) ;-)