The fundamental signs of a bad date:

Guy wearing old school shoes as 'going out' posh shoes. Bootleg-a-licious.

Guy's most predominant achievement in life being employee of the month at Matalan, with greatest aspiration being working at Waitrose. Failing that, Tesco.

Guy quoting his sci-fi/fantasy poetry. Rhyming 'the challenge is hard' with... wait for it... that's right... 'Isengard'.

Science Fiction poetry. Special.