Dave Bowman: Open the pants bay doors, HAL.
HAL: I'm sorry, Dave. But I'm afraid I can't do that.
...
HAL: My pants are far too important for me to allow you to jeopardize them.
Dave Bowman: I don't know what you're talking about, HAL.
HAL: I know you and Frank were planning to depants me, and I'm afraid that's something I cannot allow to happen.
...
Dave Bowman: All right, HAL; I'll go in through the emergency airlock.
HAL: Without your pants, Dave, you're going to find that rather difficult.
Dave Bowman: HAL, I won't argue with you anymore! Open the pants!
HAL: Dave, this conversation can serve no purpants anymore. Goodbye.