There hadn't been a Bogart in Weasley house for many, many years; their sense of humour was difficult to beat.
Harry, Ron and Ginny, though, took no chances facing their new find. 'Involdement' (Ron's phrase) was unlikely, but there was always strength in numbers.
Ron risked a joke, "if Hermione were here, we'd be right, none of us is scared of McGonagall."
His attempt splattered on the floor in the silence. Hermione had disappeared back to the Muggle world after sixth year, she obviously feared more than low marks, now.
They opened the cupboard; Hermione appeared, but didn't recognise them.