Basically, an acorn barnacle is when the female has a barnacle-looking patch growing between her legs, along with maggots eating away at her pearl. There is a video online that you can watch to get a better picture.
Dave: yo dude i just had sex with tz the other day and turns out she got acorn barnacles
John: holy shit!!!
John: holy shit!!!
by saccharinsugar November 27, 2015