updated 04/29/2014 AT 6:00 PM ET
•originally published 04/28/2014 AT 4:00 PM ET
If your daughter gave you a pacifier as a gift, would you immediately understand what she was trying to tell you?
Reddit user Jessica Hickey’s dad didn’t – but maybe he should have. As Hickey told the popular message board, “He has been asking [me and my husband] for grandchildren since our wedding night.”
Hickey told Reddit that she’s an only child, and that her mother has been dead for decades. A grandchild would make her father’s tiny family just a little bit larger.
As seen in her video of the big moment, Hickey’s dad was caught slightly off-guard by the news that he was about to become a grandfather. Still, he recovered in adorable fashion, flashing a childlike grin before being overcome with emotion.
Watch the video above.