Abraham Simpson is TV's favourite grandfather (probably). Named after Matt Groening's real life relative, Homer's father is a seasoned war veteran with an opinion on everything. Sadly, a running gag throughout the series is that The Simpsons don't listen and try to get away from Grandpa at all times.
But have you been listening? Try these ten questions about Abe to test your knowledge on The Simpsons.
Let us know how you do in the comments thread below.