hang of a
hang of a (someone or something)
An exceptionally good, exciting, or interesting thing or person. Primarily heard in South Africa. Marty sure is one hang of a guy, always willing to lend his friends a hand! Two cars for the price of one? That's a hang of a deal!
hang of a — (or a hang of)to a very high degree; very great. South African informal
In this expression hang is probably being used as a euphemism for hell .
1945 Frank Sargeson When the Wind Blows All this was because Charlie was hang of a funny to be with.