Grandpa and grandson are sat together in the lounge. The grandson quietly drinks his can of Irn Bru. The grandpa asks for a sip. After much persuasion the grandson tentatively hands over the drink. In crude fashion, grandpa removes his dentures, wraps his mouth around the can and sips loudly. He then returns the drink but grandson 'generously' allows him to finish it. The cheeky grandpa continues to drink but now in a refined manner.