dashem tesfamichael , 30 , who was jailed for stabbing a young father , has been filmed partying with prison hooch and singing to explicit rap lyrics in a sickening jail video .
he clutches a glass of the homemade illegal brew in the clip , which shows a stash of drink bottles , biscuits and crisps on a window ledge , before it was shared with friends on whatsapp .
the 50-second video clip was captured on a banned mobile phone and shared with friends on whatsapp .