If you do a Google search for "jagshemash", this is the accepted spelling for Borat's mangling of the language (even Borat spells it that way on his site). But I wouldn't expect a non-fan to know that.

the "jagshemash" tag refers to the expression "how are you doing", which is spelled "jak się masz" in Polish - although I won't insist on changing it, because who knows if another non-Slavic country doesn't coincidentally use the same sounding phrase and spell it differently? Then of course there's the issue of artistic license.

Same concept applies to "dziękuje" (thank you) at the end; except it hasn't been used as a tag.