Recently started dribbling alot.

My boy is 1 and a half years old.

I know that us humans sometimes dribble a little while we're sleeping but as of about a week ago (which is the first time I've noticed it) my cat wakes up and he's mouth and neck is absolutely saturated wet, like he's been playing in water. I study from home so I spend almost every minute of the day with him which is why I'm certain this is only a recent thing. But is this something I should be worried about?

My cat drools when I brush her - she is also saturated when we're done.  I literally have to use paper towels to mop it up.  So maybe he's having good dreams?

Having said that, though, I would definitely call a your vet and ask if there is an illness or parasite that might cause this.

Also, how are his teeth?  Does his breath stink?  He may have a cavity.

I will call first thing in the morning!
I really do hope it's just him being that relaxed and in such a deep sleep he just dribbles.

He's teeth are perfect and he's breath doesn't really smell at all, his on special biscuits because he's allergic to most foods so he doesn't have that tuna breath most cats do.

My Sebastian drools heavily when he's sleeping or very relaxed and it literally drips out of his mouth onto me. It just means he's totally happy. 

However, if Boo is drooling heavily, it's a problem. He has calicivirus and is susceptible to tongue ulcers, which are very painful and cause him to salivate. I have to quickly address it or else he won't eat.

Glad to hear you're going to check in with the vet. Please let us know how things go.

So the problem is......

Jekylls allergic to alot of foods and sometime this week he pulled some chicken out of the fridge (my fault for leaving it open) and had a sneaky little snack.

Instead of just getting a scab on he's back, which is where they usually form when he's eaten bad food something has formed on he's tongue. It's a white blister looking circle.

We've been sent home with antibiotics and a syringe so I can squirt it into he's mouth

In saying that he's appetite hasn't changed at all which the vet was happy with meaning it probably isn't affecting him too much.

Wow!  Who'd have thought it would effect him that way.  Glad you took him in