Vomiting and sucking stress ball prank toy, cute yellow lazy egg yolk, funny stress relief fidget toys. This cute yellow slime ball is a great stress relief toy and prank toy, made of environmentally friendly silicone material, safe and non-toxic. With this yolk stress ball, you can make your friend feel sick over and over again. When you squeeze its head, it spits out the yolk, and when you let go, the yolk gets sucked back in. This is really fun! The egg yolk will easily dry out in the air for a long time, we have added 4 reusable ziplock bags, you can put the egg yolk into the ziplock bags when not in use.