Bummer

A theatrical production that is so lacking in merit that it causes the viewer to remove his/her bum (posterior) from the seat; a poor performance.

'I tried my very best to sit through The Vagina Monologues, but after half an hour of that cunt speaking I fell asleep. What a bummer'.

'So lacklustre was his performance that to call the production a bummer would be generous'.

'The transexual production of Puss in Boots didn't last until the second act; a bummer by definition'.