10/10 grub Share definition Flag 10/10 grub to be put simply is the dankest weed you can buy. Usually 10/10 grub would be Cali grown weed but can also just be amazing weed. Yo Charlie wanna pick up some 10/10 grub 10/10 grub by J.L1 July 10, 2019 Get the 10/10 grub mug.