'But why did I do it? I confess that I'm an unabashed Old Leftist who never quite understood how deconstruction was supposed to help the working class. And I'm a stodgy old scientist who believes, naively, that there exists an external world, that there exist objective truths about that world, and that my job is to discover some of them.' 
(1) If you want to torture yourself, you can read Alan Sokal's hoax nonsense article, 'Transgressing the Boundaries: Towards a Transformative Hermeneutics of Quantum Gravity', Social Text, 46-47 (1996), 217-252.
(2) 'Fair enough: anyone who believes that the laws of physics are mere social conventions is invited to try transgressing those conventions from the windows of my apartment. (I live on the twenty-first floor.)' You can read Alan Sokal's gleeful unmasking of his own hoax as 'A Physicist Experiments With Cultural Studies', Lingua Franca (May/June 1996), 62-64.
...and more recently, Alan Sokal has taken aim at an accused plagiarist at Rutgers University.