Well I specifically thought about “without using tools or tools like things” aka without needing fingernails or teeth…

And yes, most duck tape (not the actual brand stuff mind you!) I have encountered in my life we’re pretty much tear resistant to the point of folding over and crumpling multiple times before even looking separable! Unless I used a pair of scissors to cut it or switched to gaffers tape which was insanely easy to separate even with only one hand! (While holding it in said hand!)

Now that you mention this though, I might just have interacted with very ‘badly’ (for a sufficiently narrow definition of badly) made tape up to this point 😅