[mynegation]

The only people who find this joke funny don’t have any children.

[D13Fd]

Six kids here, I use the “we needed some backups” joke all the time.

[projektfu]

Sounds like a game of Paranoia.

https://en.wikipedia.org/wiki/Paranoia_(role-playing_game)

[delichon]

My dad told it to me. I was the second backup.

[ahazred8ta]

There's a star trek fan who has a primary dog and an emergency backup dog. There's also the british 'heir and a spare'.

[coldtea]

https://www.youtube.com/watch?v=72rU64yq-zU

[tmseidman]

Third string

[procaryote]

You can have humour and children at the same time...

[coldtea]

Or people who have a sense of black humor. Never heard dads make dark puns and jokes of similar nature?

[marton78]

As a father, this is false.

[bdangubic]

10000% false (another father) :)))

[renewiltord]

I think I’m between the comments here. I think it’s funny to say we have a spare but I also think it’s not as funny to say “oh you have a spare”. It’s like a fat guy can joke about his fatness but you can’t.