He (Zaphod) then had another quick one (drink) to follow the first one down and check that it was all right. [...] sent a third drink down to see why the second one hadn't yet reported on the condition of the first. [...] He poured a drink down his other throat with the plan it would head the other one off at the pass, join forces with it, and together they would get the second to pull itself together, give it a good talking to and maybe a bit of a sing as well. He felt uncertain as to whether the fourth drink had understood all that, so he sent down a fifth drink to explain the plan more fully and a sixth for moral support. Zaphod drinking, after meeting the Man Who Rules the Universe.