I like to eat blu-tack.
Really? Can I ask why you enjoy eating it?
I just like the taste!
Adhesive isn't made for human consumption and is very likely toxic. You're lucky you haven't landed in the emergency room. You need to stop eating it.
But it's so delicious!
Regardless of if you enjoy eating it you need to stop. It's not something that humans are meant to eat and can potentially cause fatal issues if you continue. Whenever you get the urge to eat it, eat something edible that you enjoy instead.