Similar to Godwin's Law, this states that the longer a debate on comedy goes on, the more likely one person will compare the other's sense of humor to Seltzer and Frieberg, aka Seltzerberg. Named for Internet radio personality Josh Hadley(Lost in the Static, Radiodrome), who tends to do this a lot.
"Dude, you liked that movie? It's like Seltzer and Frieberg!"
"Dude, you know you just confirmed Hadley's Law?"