OK, now that I've had time to recover from the shock, I can say that that capture comes from one of my favorite DS eps, #960. And why is it one of my favorite eps, you may ask? Well, it's no secret that one of my all-time favorite moments on DS is when Roger calls Jeb "a cheap, insufferable pig" - and that takes place in Ep #960. Though as far as the capture goes, it's from a bit of time after that and, in fact, is part of the Robservations slideshow for February 27th (meaning it will be coming up in that slideshow in about two and a half weeks):
Ep #960 - Jeb threatens that something could happen to
David and Liz if Roger messes with him.