by The Shwanger December 7, 2004

The act of shoving a muffin (or muffins of any flavour) up a gaping, yawning sphincter. In some circumstances, this is repeated until no further baked delight is phsically capable of entering the tortured, distended shitchute, even after a good ramming with a broomhandle.
What could we do in this year's Talent Show? I dunno, luv, how about we try the "muffins up yer dirtbox" routine? That went down well at your mum's 80th.
by Flapjackandy November 30, 2009

A Scots/Scottish insult translating roughly as “Your father is a cosmetics salesman.” Avon was a cosmetics company that operates like a pyramid scheme, though it is completely possible to be an Avon lady (or an Avon man in this case) and make a profit the legitimate way without recruiting new members.
by cutesy pastel living doll August 9, 2018

by ben derover October 27, 2007

by The Scottish Contingent November 8, 2006

I stumbled upon three hobos roasting what I was certain to be fish. At second glance I had to ask what the rather strangely formed chuck turning on the spit was. He ripped another gob up from the ground, smiled with entrancement and replied, "Yer mom's box, it's everywhere!".
by sittinready May 14, 2011

Atlantic-Canadian phrase originating from Cape-Breton Island, Nova Scotia.. Which essentially means to 'go fuck yourself'.
by Tigerzeye December 26, 2022
