You grab the stick and yell “Nobody bites my rocks.” and stab the shark, right in the fin pit. Grape jelly and you know those small chocolate eggs you get at Christmas for some reason start flowing out of the sharks wound.

You can
Make yourself a jelly chocolate sandwich
Make yourself a chocolate jelly sandwich
See what the Norse gods are up to with your clearly magic stick
Or smear shark jelly on your face and see what other prey await you.