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3.
a teenage boy that posh wanks over his sister, who has extreme amounts of unshaven bumfluff under his nose.
dan u have got such a magtash. get a shave u magtash!!! ur magtash is so long its in ur mouth
by Skeletom October 10, 2007
 
1.
one one does not shave and there blond 'tash' begins growing passed the top lip, hense having a magtash. hair must be blond or does not work.
'hey have seen frostie today? he's got a right magtash!'
'yh i no hes a right ugly bastard!'
by karl bailey October 10, 2007
 
2.
TO have large amounts of bum fluff where a mustash will grow. This is seen on teenage men.
Teen age men who have not developed full facial hair thus having a magtash.
You have a magtash.
by Daniel Frost October 10, 2007