Did you find the edge obviously? Well then click the title and let me know what you think it is.

You take one to the edge above

And prod, and if I've come to shove

You me them, over all the way

And now you come to rue the day

You thought it fine and out your hands you stuck;

Well I'm your luck.

'I love the word rue. You'll rue the day you crossed me!'
'Hear, hear. There's nothing so poignant as a glove slap that also displays one's lexicon.'
'...yeah.'

Riddle Answer A Push

Riddle Explanation
if I've come to shove - if push comes to shove.

you me them, over - push someone over the edge.

I'm your luck - push one's luck.