Definitions by Jeffy Dahmer & Nanook

William Beagle 

When you are in the shower and you feel the need to stick a toothbrush in your anus (bristle end first) and jump around yelling, "I have a tail, I have a tail."

Man says "Hey honey guess what i just did."

Woman " I don't know. What?"

Man "I just did the william beagle."

William Beagle by Jeffy Dahmer & Nanook April 23, 2007