Oh My Lanta Means. Faced with the need to say "Oh my [something]" without taking anyone's name in vain, the next two syllables "lanta" just seem to roll off the tongue, given that Mylanta is, as you say, a well known over-the-counter antacid medication. The Expression "oh my lanta" came from the sitcom Full House where the character Uncle Jesse used the phrase like one would say oh my gosh.
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Find the newest oh my lanta meme. oh my lanta: jilli @JilliBearr so yesterday i gave my number to a cute guy in the dining hall. A way of expressing surprise or astonishment. People used to use euphemisms to substitute for these phrases, saying things like "Oh, my goodness!" or "Oh, my lands!" Uncle Jesse's favorite saying on the timeless classic sitcom, Full House. oh my lanta definition by Urban Dictionary.