Raw meaning 'very cool' A rawhead being someone who is very cool/bait/popular. Can be used sarcastically to hint someone who thinks their cool is a loser. Read Examples.
Person A: ' You know that ben kid?'
Person B: ''Oh yeah i heard he knocked out some 7foot guy the other day, hes a rawhead bruv!'
Person A: 'I smoked a cigarette for the first time today'
Person B: ' Wow, your a proper little rawhead arent you (laughs to himself)'