Hey guys! mr penguin is here to explain! The joke here is that this girl i.e. the left person in the chat unnecessarily disturbed the right person just to make fun of them and make them feel bad for not having a girlfriend. So to give them a payback the right person too thought of a perfect, even more offensive comeback and then asked how the girl's dad was. Actually, the girl's dad wasn't with them anymore, probably because he passed away or maybe he just left them, and this right person knew that. So to ask this thing in the same way i.e. ask for someone who didn't exist in someone's life, is very hurtful, but here since the girl was being rude it was a great thing to say, and right when they did the girl got offended and blocked them, which is why they couldn't reply to that conversation anymore. This thing they said was quite funny and wild, which is why the lower portion shows them smug asking everyone if they said something too wild.
and hey, if you’ve already read this far, you might as well drop a follow! I explain memes like this all the time :) @penguin_explains2