If you love a good food pun (and who doesn't?), these are among the WURST you'll ever see! True PUN-ishment that's kind of a big DILL!
I figured it out!
Okay so y'all know that lil A looking character next to message bubble area? Click on that, then click on the lil four square looking piece and boom there they are! You just need to click on the icon and there you can see all the stickers and use them!