The opposite of "Sweet Dreams". Telling someone to have Sour Nightmares means you don't want them to sleep well or have good dreams. Instead, you want their sleep to be bad, unsettling, or even terrifying.
Guy 1: "I'm going to bed."
Guy 2: "Sour Nightmares."
Guy 1: "Don't you mean Sweet Dreams?"
Guy 2: "No."
Guy 2: "Sour Nightmares."
Guy 1: "Don't you mean Sweet Dreams?"
Guy 2: "No."
by TheFiend138 February 14, 2018

by secretpersonlikesspecialbrowni March 14, 2014

by CAlt. May 18, 2018

by nikkimalikk May 31, 2016

by Edward and amelie November 24, 2019

When someone walks in on you masturbating near orgasm, so it is too late to stop, zip, and hide your meat away.
by Big Brown boy April 22, 2019

When you feel as though you have to take a shit but have not digested enough food to do so, resulting in a combination of stomach pains/cramps and feelings of nausea in the anus.
I had a sour butthole this morning but I decided to try and shit anyway, ending up on the toilet for almost an hour and accomplishing nothing.
by twackburn December 23, 2017
