When your skin around your lips and mouth start to sag and wrinkle from excessive years of sucking, like from a straw or felatio. Just like an anteater sucks ants for its whole life.
Dude, did you see that chick's face? She look like she got anteater syndrome, bruh! Her lips all saggy like she been sucking all day!
by cheru July 3, 2014
Get the Anteater syndrommug.