Huh? Say what? Pardon me?

Stud Boy is fluent in more then one language.  In fact, you could say he is trilingual, which means he is able to speak THREE languages fluently.  His first language is English and the one we spoke at home when he was growing up.  However, beginning in sixth grade he began taking Spanish as a second language.  After taking it for 6 years in school, Stud Boy became very fluent in this language as well.  He got so good at using it that when he volunteered at the local hospital, he would frequently translate Spanish to English or English to Spanish for the patients.  

Recently, Stud Boy has become an expert in a third language.  It's one I've just been introduced to and I am having a very difficult time understanding it.

This language is called MUMBLISH. 

It seems to be the primary language of the younger males in my house, and is perfected by the time they become teenagers.  Darling Daughter doesn't speak it, but she can interpret it quite well.  Hubby and I struggle to understand it. When we first started hearing it, it seemed like we were going deaf in our old age.  Then we realized it wasn't our hearing that was the problem, it's this foreign language called Mumblish!  It sounds like the user has marbles in their mouth, while speaking rapidly in hushed tones.  All this, while the listener has cotton stuffed deep into their ear canals.  Hubby and I look at each other perplexed, and say "Wait, wait! Wah, wah, what?"   Interesting, and loads of fun. Not!

Stud Boy left today for a trip with a friend to Washington D.C. to see his other buddy (yes, Alex, this is where you get a mention in the blog, again).  While trying to prepare for this trip, I needed to converse with my son on some important matters.  This was the dialog:

Me:  Do you have your I.D. to get through security at the airport?

Stud Boy:  Mfyys shudlffph s'in the bttffflm of the phssstph.

Me: What time is your ride coming?

Stud Boy:  Jrrddpft wdddl be gsshhhh at ttnnnnlsthrtty!

Me:  Will you text me so I know you arrived safely?

Stud Boy: szpfffhhrrrr 

(Darling Daughter says this is "SURE" - it better be!)