I saw a similar question, but it didn't really have the answer I was seeking and it wasn't concerned with the same thing — sucking someone, thus the full mouth. I saw an answer there that suggests removing certain letters from words and replacing them with ', but that while perhaps a proper way to simulate what I'm going for, won't have the same effect. A friend suggested something along the lines — "Shoo, dis nau gisme..." for the sentence "So, this now gives me..." I like this more than "So, 'his now 'ives" like the answer I spoke of would have me write. It just doesn't feel the same.
So, is there anything I could use "study" this slang version of someone talking with a full mouth?