Natasha and Wanda getting Jaws stickers to decorate their water bottles special. Knowing if they do something just for them Jaws won’t repeat the biting incident. Especially if there are Black Widow and Scarlett Witch stickers involved.

After that incident for sure, I see you and I raise you this scenario instead:

Jaws doesn't put the stickers on themselves because "why am I putting stickers on a water bottle?", so when Natasha and Wanda get them their water bottles, they stick the stickers on themselves as a "These stickers reminded me of you baby," or "I picked them out for you to have, gup" when in reality they know Jaws wouldn't destroy something Nat or Wanda did for them.

cunning, but effective *taps left temple*