<human>: Well Reddit, when I was attending college, I lived with a group of 8 girls in a house. It was super fun, we really got along and developed a strong friendship through the years.

So, this year we decided to throw a family party, where every girl would bring her family members: parents, siblings, uncles, cousins, grandparents, any family member they want. The goal was to make our families interact with each other.

The party was yesterday. Because of an accident, the traffic was shit and I arrived super late, and by that time everybody was already there. So I was passing table by table, saying hello to everyone and introducing myself for those that didn't already knew me, and one man caught my attention: it was a very old man, looking like he was in his 70's, sitting on the family table of the group's youngest girl (18F), let's call her Jenny.

So, stupid me went to say Hi, excited to meet what apparently was her granddad. He said Hello to me with a smile, and then I innocently said  "Nice to meet you, are you Jenny's granddad???". Everyone at the table was suddenly in dead silence. His smile disappeared, and her mother looked shocked. Then, Jenny just said with a half-smile: "No /u/iloveducklings, he's my dad". Her mother is in her early 40's, and she has a younger brother (2M), so never in this world I thought he could be her freaking *father*.

I was so embarrassed I wanted to die, felt my face burning in red. Quickly excused myself and left to another table. A friend of mine that watched the entire scene was laughing so hard, spitting her beer all around. She told everyone else, and I ended up laughing from my stupidity too. They ended up forgiving me.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: stupid me mistakenly thought that my friend's dad was her granddad and never felt more embarrassed in my entire fucking life.