#BritishSexPositions trends on Twitter as Brits employ classic humour ahead of Valentine's Day

Lines included: 'The Iron Lady: good for whoever's on top, but the bottom gets painfully screwed'

(Image courtesy of British Logic on Twitter)

British social media users have responded to the imminent arrival of Valentine's Day with customary sarcasm as the hashtag #BritishSexPositions trended across the UK.

Twitter was flooded with a number of witty interpretations of the popular hashtag.

We round up some of our favourites.