The one-off special called Fwends Reunited saw the four main stars Simon Bird, Joe Thomas, Blake Harrison and James Buckley back together.
It was hosted on Channel 4 by Jimmy Carr in a chat and quiz show style format.
The programme also had guest appearances from the supporting cast of the series which ran from 2008-2010 and spawned two films.
However, viewers expressed disappointment and confusion at the instalment.
Lordy it was awkward & uncomfortable to watch
Inbetweeners reunion viewer
Some thought the show was “awkward” and branded it “uncomfortable to watch”.
One fan wrote on Twitter: “So glad it wasn't just me and @1909_callum that thought the #inbetweeners reunion show was well weird. Whole thing came across awkward and like it had just been thrown together 5 mins beforehand."
A second declared: “Just watched #FwendsReunited. Lordy it was awkward & uncomfortable to watch. No one of the cast seemed interested & often embarrassed by the show which made them all famous.
“Shame it wasn’t a true reflection of people’s affection for the show. #inbetweenersreunion #inbetweeners.”
“The #inbetweeners is such a brilliant show, it deserved a better 10 yr review, not the shambolic, cut & paste #FwendsReunited. Jimmy Carr was a poor choice for host. A waste of two hours,” a third vented.
Meanwhile, there were others who thought the