“If there's anything more important than my ego around, I want it caught and shot now.”
“If I ever meet myself, I'll hit myself so hard I won't know what'***** me.”
“I'm up to here with cool, okay? I am so amazingly cool you could keep a side of meat in me for a month. I am so hip I have difficulty seeing over my pelvis.”
"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."
“One of the major difficulties Trillian experienced in her relationship with Zaphood was learning to distinguish between him pretending to be stupid just to get people off their guard, pretending to be stupid because he couldn't be bothered to think and wanted someone else to do it for him, pretending to be outrageously stupid to hide the fact that he actually didn’t understand what was going on, and really being genuinely stupid. He was renowned for being amazingly clever and quite clearly was so—but not all the time, which obviously worried him, hence, the act. He preferred people to be puzzled rather than contemptuous.”