a hairstyle worn by psychobillies, short on the sides with the top styled upwards and trimmed so that it is flat, hence the name 'flat top'.
"cool,cool,cool flat top yeah" lyrics by horrorpops.
My boyfriend Gareth would love a flat top but his hair's too curly lol
A female who has no tits
"Errr look at tht bitch.. shes a flat top"