To throw up violently - as described in the viral video hit "Gap Yah". Usually, the recounting of such a "chundering" will be punctuated by a great many less-than-savoury details on the subject.
"Yesterday, I was led out onto the parade ground... and then I just CHUNDERED EVERYWHERE, we'd been on the lash the night before."
The insertion of a connecting pipe between two peoples anus's (preferably a clear pipe) and the passing of turds back and forth for sexual gratification.
Do you fancy something different tonight darling? On urban dictionary I found something called Chunneling