Unc

Chill, unc, nobody asked.

Source: tatoeba (13700126)

Then Pangborn would find him and ask him what he thought he was doing here. He would ask if Ace had a job. He didn't, and he couldn't even claim he had come back to visit his unc, because Pop had been in his junkshop when the place burned down.

Source: wiktionary

Yo, TikTok, we need to raise money for Unc.

Source: wiktionary

Now he’s [Hasan Piker] thirty-three—so old, in streamer years, that his fans call him “unc.”

Source: wiktionary