A person with the appearance of an 18 year old from behind but with the look of someone completely older from the front. Similar use as BOBFOC (body off Baywatch, face off Crimewatch) or Monet (looks good far away, but a right mess up close)
'Cor, I wouldn't mind
hanging out the back off that' (sips drink, followed by
spit-take, once individual turns around) 'Christ, she looks like
Miss Marple! What an eighteen-eighty!'
'I wouldn't mind
hanging out the back of that' (sips drink, followed by
spit-take, once individual turns round) 'Christ, she looks like
Miss Marple! What an 1880!' (eighteen-eighty)
