in other words mattress back describes a fat person you can use it for all people like if they are skinny you would say you single matback and if they are fat you call them a double matback
by misterrrjosh November 4, 2019
Matress-Back, meaning a girl is a "slag" and always has a back to matress doing "the business". Also means that a girl is a prostitute.
1) Bro, that gyals a matback, been with bare mans
2) Oi, did you know Sophie is a matback these days?
2) Oi, did you know Sophie is a matback these days?
by kyasper August 19, 2005