A Lesson Is Learned but the Damage Is Irreversible 1 credits

A Lesson Is Learned But The Damage Is Irreversible (ALILBTDII) is a webcomic drawn by David Hellman and written by Dale Beran. Ted Rall described the comic as "explor[ing] the limits of pessimism and fatal consequence in a universe that would be difficult to imagine on the printed page." David and Dale are the primary characters, although they do not appear in every episode, and there is a small cast of real-life supporting characters, including schoolfriend/mad scientist Paul, Dale's sister Sally, and David's mother, Debby Hellman (who dated the Devil in one strip).

Source: Wikipedia, CC BY-SA 4.0.