n. similie. A vaginal orofice as large and loose as a rubber wellington boot opening. See also clown's pocket, wizard's sleeve
"It was like throwing a stick down an alleyway, her muff was like a welly top"
by Stouffer November 07, 2002
a loose vagina. bucket fanny
it was like shagging a welly top!
by Schmee June 25, 2004
A woman with a large cavernous vagina
Its like fucking a wellytop
by Blissy February 15, 2005

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