Blossom is waking up and stretching her tentacles after a nap. She's ready to go out hunting. As an alien biological shapeshifter, Blossom enjoys this type of spidery tentacle form for tasks that require a lot of strength and flexibility like hunting. Such a form gives her alien levels of agility and strength that allows her to easily overpower her prey and harvest their biomass. She can also shift the ends of her tentacles for tasks that require dexterity. Such a form is also convenient for carrying large amounts of biomass inside her body. Lots of biomass energy is needed to allow free exercise of her fleshy shapeshifting abilities.

Also, the crevices between her legs and skin folds are canonically ticklish.

Thanks to Jam for helping to visualize my strange ideas!