Top Definition
As an online discussion grows longer, the probability it being reduced to dick jokes approaches 1.

c.f Godwin's Law

Note: invoking Cathcart's Law massively increases the probability of dick jokes, as it contains the fragment "grows longer".
(following a lengthy conversation about GPS)

Steve: My GPS has a 3" screen, and it's perfectly adequate for my needs.

Tim: Yeah, but how long do you want to be staring at a 3" thing?

Steve: ...

Tim: Cathcart's Law!
by baztastic March 10, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.