Just like “second hand embarrassment” when you feel embarrassed watching the embarrassing actions of another person, “Second hand sin” is the feeling of guilt you get by observing the careless, regrettable actions of another person.
Second hand sin :

I’ve later felt bad after seeing my friend get in trouble due to my rebellious actions/ideologies.
by Mario F. C. December 21, 2021
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The hand that you use to jerk off
Last night I jerked off with my right hand known as my sinful hand :D
by fungboi January 23, 2023
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