Flopglopple
The Flopglopple is a virtual pet from the game E.T.: Digital Companion. It would normally be non-noteworthy had it not been for the fact that Digital Companion is a broken mess and during the course of streaming the game Draco was able to fully corrupt the game's memory and render the game completely unplayable and unusable for its intended purposes as a personal organizer.
Among the "experiments" carried out by Draco was messing with the in-game calendar and seeing what would happen if you allowed it to roll over past its final day. As it turned out it would just keep repeating that year's New Year's Eve indefinitely, so Draco decided to roll the date all the way back to the earliest year the game had in memory and set it to January 1st. In doing this Draco inadvertently messed with the Flopglopple pet so when he went back to check on it to see if it died when he set the date ahead several decades and never fed the animal he was surprised to see it alive and in good spirits. The game then stated "Flopglopple is 65532 days old", or just over 179 years old. Messing with the calendar caused the virtual pet's age to either overflow or underflow and wrap back around to its limit (256*256), which Draco found incredibly bizarre and humorous.
The Flopglopple bug was only one of many that came about from Draco messing with the in-game clocks and dates, but it was funny enough to stick and became a Nightbot command, "!flopglopple". When used the command will return the phrase "Flopglopple is 65532 days old!", a reference to the Digital Companion glitch.