During Season of the Plunder, he shares a strange drink with Drifter, Mithrax, and Eido. Then in this season, he drinks all sorts of random potions brewed by Eido with crazy ingredients and bizarre reality-warping effects. Now in the Past is Prologue quest finale, when looting the vending machine, he grabs a bootleg tincture he finds alongside Chatterwhite. I find that pretty funny.