Believe me, the three above are the barest, most-kid friendly examples that still contain some chuckles that I could find at the moment.
Also, and I hesitate to say this, but-- CH is also about shitting. I mean, the characters delivering excrement and making jokes out of it. I don't think I'm going to post that stuff, but if you like, you can search on all that.
(even "Mr. Hankey" from Southpark is somehow more appropriate XD)
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[WARNING] [MATURE] [WARNING-BELOW]
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The lead comic from the Dental Floss tome is this: