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.
Brandon -- Dude, he has so many girls chasing after him
Jon -- Yea but Danny won't do shit. They're practically tarzaning on him
(n.) overcoming boredom by yelling; the uncontrollable urge to yell and scare the crap out of others.
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.