This is a person (who is a low life) who is ripped; however he only obtains this level of ripped from the manual labor job that they are forced to do due to a lack of qualifications or a criminal record. These people generally walk around with their shirt off on mild or cold days to try and show off their scally ripped body.
A scallwhop is a hateful ho, who needs to know whats good. Many times associated with a pimp. Also known as Tricks, Marks, Trick-ass-marks, or mark-ass,tricks
Similar in style to the Scottish tam-o-shanter, the Irish scally cap provides no protection from the sun, but coves the top of the head from the cold, and has a small front brim. Mostly found in leather or wool. During the 1980's was a trend in places such as Australia and the US and Canada.
"Is that a new scally cap you're got on your head, John?"
"Aye, made o' the finest grey wool."