You got “shpilkis” exactly correct: ants in the pants. As in, “My brother-in-law has shpilkis. He can’t sit still for five minutes.”
Ain't that supposed to be “My brother-in-law had shitpilkis. Yep, he had to sit very still every five minutes on the toilet this passed weekend until it finally cleared up.”
That literally took me back 30 years or so. I laughed out loud when i saw the word bc i haven’t had occasion to see/hear it in forever. It was fun to travel back in time and remember the friend who introduced me to the word. I haven’t seen or heard from him in decades either, i think he’s practicing in FL somewhere.