1. A total jackass, but in an annoying way. Somebody who is always whining, bitching or complaining and making life miserable for those around them.
2. A person who lies or exaggerate to the point where you can't believe anything they say. Everything that comes out of their mouth is bullshit, thus they are turd gurglers.
Saul always brags about how many girls he's nailed, even though everyone knows he just jacks off to National Geographic. He's a total turd gurgler.
Someone who criticizes other's people's actions in a particular, nitpicky and public way (the gurgle), using some bullshit idea (the turd)or as their justification. The resulting sound is that of gurgling a turd.
Person A "OMG I hate people who drive SUVs, they are causing polar bears to die because of global warming"
One whom partakes in the act of ingesting then regurgating turds after they are burgled. They are often aided by a turdburgler. Another name for a turdgurgler is a Jaremy In Film.
Luke: Hey I just stole these turds.
Jaremy: Well can I gurgle them.
Luke: That is fucking nasty you turdgurgler.
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.