Here is the reason why that clip is funny, explained by Chris Yuki from Oregon. Thanks Chris!
Hey, there are two reasons why the "Pot Answering Machine" soundfile is
funny:
1) That's Tommy Chong. 'Nuff said!
2) "Number" used to be a slang term for "Reefer" back in the day. There's a
Steely Dan song called "Rikki Don't Lose That Number." Supposedly it's
about a joint someone gave Eric Clapton (they called him "Rikki" - short for
Eric), that he was too down and out to smoke at the time. They put it in an
envelope and told him to take it back to the hotel room, and maybe he'd want
to smoke it there...
So, yeah it's funny - but mostly to the 40+ year-old-stoner crowd.
