Also just to add to the pain, the grenades will combine damage in a way you don't expect.
Picture a Venn diagram, two circles partially overlapping representing the blast radius of two grenades. You would expect each grenade to do normal damage but then the area where they intersect to be double damage right? Wrong.
Turns out that the entire blast radius of *each* grenade gets the damage of *both* grenades...or more if you have many of them in a row.
This has bad consequences if you chain an explosion back to you, but can also be used to your advantage.
Husk can pop grenades just after they leave your hand too, so careful with him.