We can't ask Leslie Winkle.
The Big Bang Theory Season 1, Episode 13
Yeah, Leslie Winkle.
The answer to the question:
The Big Bang Theory Season 1, Episode 13
...or as I call it, the Leslie Winkle
Experimental Methodology.
The Big Bang Theory Season 2, Episode 2
Leslie Winkle. Ahem.
The Big Bang Theory Season 2, Episode 21
...and Dr. Winkle just ripped
the sign-up sheet off the wall.
The Big Bang Theory Season 2, Episode 3