gotcha day n. the day or anniversary of the arrival of an adopted child (or pet) into the care of an adopting family; less commonly, the day or anniversary of their first meeting or of the adoption becoming official. (source: Double-Tongued Dictionary)
Further reading
Sean in Oneonta, New York, says that when he was growing up in New Jersey, his family would pile in the car and set off on a surprise adventure, whether a short distance or long, and the kids would be told only that they were going on Buxtehude...
Jameela in Charlotte, North Carolina, says her family refers to their television’s remote control as the clicker, but her friends insist on calling it the remote. These devices go by other names as well, including doofer, flicker, zapper, and...