It's pointing at the speech bubble, meaning that it's supposed to be parodying one of Piccolo's lines. I don't know which specific scene the line is from, though, but Piccolo has some meme value on the Japanese anime culture internet so things like this sometimes happen.
The word for "meal" in Japanese is read as "gohan" and Piccolo's line is (presumably) directed to the Gohan from the Dragonball series. Since they're already talking about food, it sort of fits into the situation. Translation would vary depending on context, but something along the lines of "Alriiiiight, Gohaaann (let's go)!!"
I'll treat youMomijiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii--mijiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii-Alrightttt
FoooddddddShut up...-heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-Piccolo-sanKill them, kill them.I came over after sensing a disturbance, but what should I do? Should I just kill them?When you're done, let's go eat, okay?Cheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-