Angry Dick - S1-E13
Sally: Dick, what's wrong?
Dick: I don't know. There's an odd sensation moving through my body. [Groans] Who the hell does that stupid sack of fat think he is anyway?!
Harry: Dick?
Dick: I have a plan.
Sally: Remember, we're not allowed to liquify humans.
Dick: OK. I have another plan.
Other mistake: Sally mentions that she makes jello with cheese, but many times the aliens have shown that they are terrified of Jello.
Trivia: Dick is never seen walking in this episode and is only in an upright position when he moves from the chair in the lounge room to the wheelchair in the opening scene. This is because John Lithgow hurt his ankle playing tennis, and the episode was written to allow him to be in a wheelchair for the entire episode.