2. An acquiantance who constantly brags.
3. State of a ballsack post-anal insertion, typically achieved during intercourse with major league skanks.
2. "So um guess who just got a job wearing suits all day?" "You, turdnuts?"
3. "Wow that bitch's asshole was so loose I had no problem making turdnuts!"
Could also be a very hard solid and almost walnut shaped piece of poop, the kind that hurts when it comes out and causes the wet cheeks affect (when toilet water and/or piss splashes onto your rear from the impact of the solid fecies)
"I am having the worst night possible! I was on a date, hadn't had my benafiber and I passed a huge turd nut at the restaurant and when I went to wipe my wet ass there was no toilet paper so I had this huge yellow ring on the seat of my white skirt the rest of the night"