To abandon your friends after promising them you'll be somewhere
Also can be used if your friend leaves the lads earlier than expected in order to chin you all off for a 6/10.
*thinking that your mate will let you down by not turning up at the pub after turning all coms off to hang out with a six out of ten instead (in reality a five like Chinderella)
Andy: This stinks of a Pedroing
Godders: Agreed
*After being let down again by your mate:
Robbie: We've definitely been royally Pedro'd here.