Old School Hip-Hop

Trying to identify mid-80's song with lyrics:

"Don't push me 'cause I'm close to the edge,
I'm trying not to lose my head
Ah-ha ha ha Ha
It's like a jungle sometimes, it makes me wonder
how I keep from goin' under..."

Thanks

Grandmaster Flash and the furious five-The Message
http://www.youtube.com/watch?v=k3kRuJhIVIo