So you are on a picnic or at the beach and suddenly you realise that you do not have a knife slice up the watermelon with, what do you do? Some of us might just drop it and use the pieces. However, The SlowMoGuys have a better idea, why not use elastic bands, check it out especially the ending.
These are the reasons behind the team deciding to slice a watermelon using elastic bands;
Gav and Dan forgot to bring a knife to the picnic. Thankfully they brought 500 elastic bands. Shot at 1600fps with a Phantom Flex
Source [Geeks Are Sexy]