Sense of humour failure

This is yesterday, but today is pretty similar.

Last night we saw 'One man two govnors'. For years I've heard people raving about how funny this play is. I went all geared up to laugh my socks off, instead it felt like I was trapped in a surreal nightmare. The theatre audience laughed heartily hysterically throughout... but it left me completely and utterly unamused.

Is it just me?!