Searched the net but cannot find it. I remember it played by my cousin in the early 1980's the lyrics from the chorus as I recall are something like this:

Too sure I'm awful sure
Too sure I'm awful sure
Tonight I'm gonna be a man if I can
Too sure I'm awful sure
Too sure I'm awful sure
........at the.....

The song is quite rocky, maybe reminiscent of Thin Lizzy or some late 70's rock band.

Be very grateful if anyone can identify this?