My son wants to know what is the fastest thing in The World? Anyone know? Any help appreciated!

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Ds (7) wants to know if anything is faster than thunder and lightning? Anyone know? TIA!

Sorry just back!

Well, I could tell you, but I might just keep you in suspense for a wee bit longer and start a new thread this evening to see if anyone can guess.

I have yet to find a question that nobody on mumsnet knows the answer to, so maybe this will confound you all

surely it must be bobsleighing (if not motor-assisted)?