ISIS Shampoo

Alright, listen up, you big dummy. Explain bear is here! You got a terrorist group, ISIS, see? And there's a famous shampoo called 'Head and Shoulders'. The joke is a wordplay, a pun! They changed 'Shoulders' to 'SOLDIERS' because, you know, ISIS has soldiers. And it sounds like 'Head and Shoulders'. Get it? It's dark because it's about terrorists, but it's wordplay. You probably still don't get it, do you?