Like how Tarzan grabs another vine before letting go of the one he's holding, this is starting to hook up/date someone new before breaking up with your current partner
A term described by the actions of very desperate females who undeniably want a guy (primarily his dick) and are visably doing it so much, they are practically swinging off his dick.
When work became too quiet, Lori showed her inner tarzanism by letting off with an incredible AAah-ah-iii-ah-iii-ah-ii-aah yell making her co-workers jump.