Ah, alright.

Judging by the image Blaze posted - No. No way.
Adolescent - maybe - in the conditions Lionobsession explained, but a cub is too small and too weak.

http://www.livehealthytraining [...] Father-lion-and-lion-cub-1.jpg
no a lion cub can not kill an adult lion by its self

if it where to say cause a lion/lionness to hurt it's self (such as broken leg ect) although not the one doing the killing would be the reason the lion/lionness died/was seen as weak then yes but that is a streach

It could be possible depending on the health of the adult lion. If the adolescent lion was strong and healthy, probably having had a meal recently, and he was up against a weak adult lion that had caught a disease or had had some terrible injuries recently, probably hadn't eaten for a while, then I would think it was possible. As for lionesses, in the wild they normally stick together so only a lone lioness could fight another lone lioness using the same conditions as before, which are same for lioness x lion and lion x lioness.
Don't quote me on this as I am only thinking what is possible in the wild and I hope this helps solve your problem.