To have an arse like a 'Rabbits Nose': To become so nervous as to develop an anal 'twitch' in anticipation of a forthcoming event. To be 'shitting oneself'.
I had an arse like a rabbits nose when they pulled me over. I was so ripped to the tits that i'd already pissed my pants several miles earlier and run over a dog and a small child.
by chesterpest January 17, 2010