It feels like only yesterday that American Dad! first aired on television screens across the globe. In reality, the Seth MacFarlane-developed series is currently in the midst of its 16th season.
By any stretch of the imagination, that's a ridiculously impressive amount of longevity for any TV show - let alone an animated series.
After Family Guy became one of the biggest shows on worldwide TV, MacFarlane re-teamed with Mike Barker and Matt Weitzman to develop a new show; a show that would come to be known as American Dad!.
Centred on the Smith family - of which patriarch Stan works for the CIA - the show is less about cut-away gags and slapstick humour, ala Family Guy, and instead usually tends to focus more time on relationships and the humour that exists within those relationships.
Much like Family Guy, American Dad! has maybe had its ups and downs in terms of quality over the years, but that's always going to be the case when a series has ran consecutively for so many years.
What we're after here, of course, is to find out just how well you know American Dad! - and we've put together a quiz that we guarantee even the biggest fans of the show won't get 100% on.