When a woman's garment -usually panties, shorts or pants - is caught between her ass cheeks it is known as 'dog in the meathouse'
by Drygulcher January 09, 2015

The penis in the vagina.
by Mr. Terrence L. Trezvant September 24, 2003

by Mr. Terrence L. Trezvant November 17, 2006

It means that your underwear and pants have recessed into the butt crack and it has formed a noticeable line in said clothing, viewable by all.
by maddizzletwentytwizzle November 24, 2007
