ugly as sin 

Something that is so disgustingly hideous it is comparable to sin itself, not necessarily physically ugly, something so disturbingly ugly it makes your stomach churn.

1. The old renault Twingo is as ugly as sin.

2. Jesus Christ that girl is as ugly as sin.

ugly as sin by Arthur C September 30, 2007

Ugly As Sin 

a human so repulsive they are either laughable, or just generally disgusting.

"look at her, you wouldnt touch her with a bargepole, shes ugly as sin!"

Ugly As Sin by DawnHoneybees January 24, 2008

ugly as sin 

the ugliest fucking chick uve ever seen on this whole planet....so ugly it is a sin to be so hideous

"man check out that chick she is ugly as sin i thinka im gon throw up!!"

ugly as sin by uhhhMARISSA December 28, 2005

Ugly As Homemade Sin 

The ugliest thing you have ever seen in your entire life.

That dress is ugly as homemade sin. She is a sweet girl and smart too, which is good because she is ugly as homemade sin.

Ugly As Homemade Sin by The Ladybug Whispers ... May 28, 2016

ugly as homemade sin 

A very southern phrase refering to the act of incest.

"that's as ugly as homemade sin!"

ugly as homemade sin by C. Hardy October 13, 2006