True story! Since it's my mom's birthday today, I'll relate an actual incident with her and my family that I think is hilarious (but, of course, you're allowed your own opinion...).
Mom and I usually spoke with each other on the phone on Sunday evenings (we lived far apart!). One Sunday, I said I had heard a new joke, and as my brother and sister-in-law were visiting my parents at the time, she could share it with them. Mom replied, "You KNOW I can't remember jokes!" So I said I would give her the joke one line at a time, then she could immediately turn to the rest of my family and give them the line. That way, the joke would be related accurately (remember, this was well before everybody had a speaker phone!). Mom said okay, so I started telling the joke, and she dutifully turned to my family and very accurately gave each line just as I had given it to her. When I finally got to the punchline, my mom started laughing SO HARD she couldn't tell the rest of the family! Then THEY all started laughing because Mom couldn't finish the joke! Finally, my brother had to wrest the phone from my mom to get the punchline. Then everyone was laughing uproariously. I think most of us were laughing not because the actual joke was that funny (I don't even remember what the joke was as this point!) but because of how my mom couldn't finish the joke!
Probably my favorite "Mom" story. She's in heaven now, but she remains in my heart!