Speech impediment suffered by or sometimes affected by socialist activists of the male persuasion.
Not all of these males are homosexual, but are effeminate or campy enough to acquire this impediment either by association or willful affectation.
It is the unofficial dialect of the male liberal.
1. The guy from PETA spoke with such a heavy environmenta-lisp it was hard to take him serious about saving the endangered silver speckled salamander.
2. My son left for college sounding like a man, but recently came home for a visit spouting jibberish about the evils of capitalism with the most effeminate environmenta-lisp I had ever heard.
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