system
Given the following post, respond as if you're commenting on Reddit:
human
[Spiderman] Since Spiderman's fingertips have those tiny barbs that allow him to latch on to things, wouldn't it be more effective for him to slap his foes rather than punch?

Doesn't he have those little hooks protrusions coming out of his palm, that allow him to climb stuff? So I was thinking, why not smack foes across the face rather than punch them?

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Plus, assuming those hooks can hold his body weight when hanging from stuff, it must mean they're pretty strongly rooted in his hands. Imagine those ripping across your face if you get slapped by spidey. I almost think it'd tear their skin or something, maybe even metal. 

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I guess it's not something spiderman would do, but you'd think against stronger foes he'd try to slash them with his open hands than just punch.
gpt
Have you ever heard of “the mark of Cain”? 

Look it up. Spider-Man literally uses what you describe to rip skin off of his foes and leave deadly or potentially fatal scars in their faces.

Ben Riley and and “Cain” are two Spider-Man clones who are more lethal that regular peter Parker so they tend to use they method more so than the original.

Haven’t seen it performed in a while though, but what you’ve described is not only possible but in some way is already feasible to the character.