Lord forgive me for what im about to do 

Implys that the poster is about to masturbate to the post above.

Masturbation is a sin so they're asking for the lords forgiveness.

guy 1: posts photoshopped picture of thanos with a big ass
guy 2: lord forgive me for what im about to do

Lord forgive me for what im about to do by blueoystercultfan24 November 30, 2019