mumblespank 

When you spank spank your “mumble” or to, mumble while spanking “it”

Man 1: What are you are you about to do bro?
Man 2: Im about to Mumblespank

mumblespank by Wishmynamewasdonniedarko February 8, 2025

mumbletank 

This is the place in which a person will find themself after they have consumed so much alcohol, chronic or other mind-altering substances that anything and everything that comes out of their mouth will be completely and utterly unintelligible.

That cretin just chugged 2 pints of MD/20-20 and he will be deep in the "mumbletank" for the foreseeable future.

mumbletank by FastEddie, KOS May 1, 2009

mumblepants 

girls' pants so tight that you can see the lips moving but you can't hear what they're saying

woah! look at the mumblepants on her!

mumblepants by jonny notions October 12, 2005

mumblespeak

The attempt to cover something up by giving information that says absolutely nothing.

Devin Nunes used mumblespeak to try and divert the public's attention from the investigation into Trump's ties with Russia.

mumblespeak by notdahamstereep March 22, 2017