Horses and Carrages

So, yesterday I was sitting down with Dave and Mom. And we were talking about what was popular when he was a teen.
So like drive-ins.
Greased hair.
Stuff like that. Then It came, word vomit.
"Horses and Carriages." It rolled out of my mouth and mom burst out laughing as did I. Dave chuckled along. He smiled at me, we were going to Sonic tomarrow, which is now today... Well we went to Sonic.
So last night he smiled at me. "That milkshake of yours just went from a large to a small."
I laughed harder. Mom tried to restart the conversation, but everytime she tried she laughed again. Which made me laugh.
Wow were a weird family....