i can’t believe i’ve never seen this joke before! it’s the tagline at injektilo:

there are only 10 types of people in the world — those who understand binary and those who don’t. that was worth waiting 30 years for. yes, really.

when i was about five i had an ice lolly with this joke on the stick:

how do you make a bandstand? it took me at least ten years to understand the punchline:

take their chairs away something in the delayed reaction means that that joke still makes me giggle today. i think the wait for that binary joke to find me will make it equally amusing to me for years to come.