Shit loud 

Group of loud animals.
Shitload+Loud = Shitloud

Jess: O look at these parrots
Rez: Yea.. they are Shit louds!

Shit loud by AtishP March 24, 2009

Loud as shit 

Louder than a group of old men with irritable bowel syndrome pooping in unison in a public restroom!!!

After drinking a beer, my lady can burp loud as shit!!

Loud as shit by Puddle1970 July 6, 2017