In fact 'hwp' is an acronym typically used as a euphemism for "overweight or obese, but not morbidly obese".
"hwp" is generally substituted for actual numbers, hiding the person's actual weight. Most people who claim to be hwp are overweight or obese, but not super extremely fat. Skinny people and thin people never claim to be hwp in personal ads, though they fit the literal definition.
"How much do I weigh? Let's just say I am HWP."
"I'm never answering another craigslist ad without knowing how much the person actually weighs! No more HWP guys for me!"
West Midlands slang word for rockers, bikers, greasers etc. In the late 1980s it was used by the UK music press to refer to a specific scene centered around the bands Pop Will Eat Itself and Crazyhead. The term never found favour with readers of 'the inkies' (Sounds, Melody Maker and the still extant NME) and was soon dropped. Now often used in predominantly working-class areas of the midlands and the north to mean someone who listens to rock-derived music and/or dresses in a manner that suggests they affiliate themselves with rock music of some kind.
Some grebo passed with Sabbath playing on his stereo.
The Poppies are at no. 17? God, a grebo band in the charts!
They're playing nu-metal now, bloody grebos!