Sam asks Lance how tall he is and he says 6' 2 1/2". Sam laughs and makes fun of him because he claims to be 6' 3", and makes jabs at him for the rest of the episode about the 1/2" difference. In actuality, Ted Danson is 6' 2 1/2", and J. Eddie Peck (Lance) is 6' 3".
The name "Lance Apollinaire" may have been inspired by Guillaume Apollinaire, an early 20th century writer credited with coining the term Surrealism.