I've never seen it before, but it's cute. I wonder what it is.
Does that mean you think my comment is stupid? Honestly, I see that face everywhere.
Looks a lot like the "thickhead" font:
http://www.dafont.com/thickhead.font Well, from Thickhead you can use only the first letter, "M". All other letters are different.
SashiX said 
Well, from Thickhead you can use only the first letter, "M". All other letters are different.
also p,n,t,i modified
Yeah, but... well, don't know, too many modifications for that text

(could be just a different font

)
In short, it is not clearly identifiable.
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