Duncan picked up the nickname Druncan (also spelled Drunkan) during the 2012 livestream.
Nearly everyone has a 'gin rage' related nickname actually. Sparkles admitted to being called Drinkles (owing to him coming in to part of the livestream extremely drunk) and during the 27th Dec livestream, they thought up Brewis Ginly for Lewis. Strippin is Sippin, Simon is Honeybrew, Sjin is Tsjipsy, Zoey has her fake last name changed to Drunkasheck, Martyn becomes Martyni (even though that isn't what he drinks) and so on.
Promoted Fanboy: Despite being a general gaming channel, the Yogscast are almost universally known as theMinecraft channel note besides the official one: Notch, the creator of Minecraft, frequently tweets about the Yogscast's Minecraft videos, and at GamesCon 2011 they officially represented Minecraft. Simon even got to wear Notch's hat!
They've also gotten to play competitive Team Fortress 2 matches with Notch for charity.