This refers to one particular episode as opposed to the whole series.
It concerns Linda and her mates gatecrashing the funeral of someone they've never even met just for 'fun'. They giggle at the audacity of their cruel dare during the service of a girl who died young, whom they pretend was a close schoolfriend...And, get this - the grieving mother even forgives Linda for permanently marring the memorial of her daughter.
I think this was in the first series. I immediately lost sympathy for characters capable of such insensitivity, and didn't watch any further episodes as a consequence. Nor did I derive any satirical point from the proceedings. It seems the writer must've thought "Haha...They gatecrash a funeral...No one's done that in a sitcom before...".
Linda's a monster.
