South Park's Five Grossest Scenes (VIDEO)

WATCH: South Park's Five Grossest Scenes

South Park: The Complete Fifteenth Season is out on DVD on 2 July. And to celebrate this momentous event, we thought we'd round up some of the show's finest moments. And by 'finest' we do, of course, mean 'hand-on-mouth grossest'.

Because season 15 of South Park features exactly one of those. In the episode HumancentiPad, Kyle is punished for not reading the iTunes terms and conditions before agreeing to them. The result? He has to become part of the HumancentiPad - three people joined mouth-to-butt with hilarious and, yes, completely gross consequences:

Another classic episode is Hell On Earth - or to put it in Friends parlance: the one where Satan has his Sweet Sixteen party. This one didn't feature just one serial killer, but three of them - Ted Bundy, Jeffrey Dahmer, and John Wayne Gacy - committing horrific mayhem, Three Stooges-style:

The same season (10, fact fans) also spawned another unforgettable South Park moment: Richard Dawkins banging Mrs Garrison in the two-parter Good God Go. Truly, and unfortunately, a moment you can never unsee. You have been warned:

Go God Go

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Meanwhile, back in season 4's Fat Camp, Kenny gets his own TV show - The Krazy Kenny Show - on which he showcases his talent for disgusting acts. Such as...

Fat Camp

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And finally: season 12's Over Logging. In which Stan's family end up in an overcrowded 'internet refugee camp', where each family is only allowed 40 seconds of internet access a day. It's all too much to bear for Randy Marsh, who sneaks in to watch porn and gets caught with his trousers down. Quite literally.

And if you've lasted that long, you must be a South Park fan. And if you're a South Park fan, enter our competition to win the complete 15-series collection. We promise it contains all the grossness you need.