Humorous word play.
The Big Bang Theory Season 3, Episode 2
Humorous.
The Big Bang Theory Season 5, Episode 21
The HUMOROUS implication
being that I am Wile E. Coyote?
The Big Bang Theory Season 4, Episode 2
That was also HUMOROUS.
The Big Bang Theory Season 8, Episode 7
with a climactic
HUMOROUS twist.
The Big Bang Theory Season 7, Episode 12