<human>: Summarize the given text in a few sentences.

Last night, I visited my Mom/rest of family and we had a Christmas Eve dinner with just us before all of the guests were there today for Christmas. My mom gave me the gift she got for me right before I left, and I told her I would open it when I got home.  
I opened it to find something called an "aPen" which is a "smart pen" that digitally captures what you write with the pen, and then transfers it to the PC.  
I thought the gift was pretty neat in premise, and I appreciated that my mom had put some obvious thought into it, and it was obviously not an inexpensive gift. But, I couldn't help but feel that it was impractical and I would never use it.  
The more I thought about it, the more bitter I became about the gift. I was determined to tell my mom today to return it and not waste the money she spent on it since I would never use it.  
While I showered this morning, I realized I'd never want to hurt my mom's feelings like that, so I decided to suck it up and stop being a jerk.  
When I got to my mom's house, she asked me how I liked it, and I told her I thought it was neat. She asked me what it was. I didn't know how to respond. She then explained to me that she saw me post a video about it on Facebook once and decided that's what she would get me for Christmas.  
I got home not too long ago, and spent 20-30 minutes looking at old Facebook posts, and found one from August. Sure enough, I did post a video with a nearly identical product, and literally wrote "I want this."  
I feel ashamed of myself right now. I spent last night having a pity party about how "nobody ever puts thought into what they get me" when in fact my mom had given more thought to it than I did. I'm a fucking jerk.  
Please feel free to explain to me what an ungrateful asshole I am. I've realized I really need to grow up and stop acting like such a shitty little baby.  
I'm sorry, mom.
<bot>: Mom got me gift that I secretly loathed and made myself very angry about. Then found out it was something I had forgotten that I had expressed interest in wanting 4 months ago. I am an asshole.