It’s just referring to the principle and doesn’t need to be translated.
From the Wiki article:
“Yes, and…”, also referred to as “Yes, and…” thinking, is a rule-of-thumb in improvisational comedy that suggests that an improviser should accept what another improviser has stated (“yes”) and then expand on that line of thinking (“and”).[1][2][3] The improvisers’ characters may still disagree.[1]
VPNs aren’t working unfortunately, at least if you’re not logged in. They completely block the site when you’re trying to access reddit via VPN. This is a VPN related forum where this is discussed.