I Can't be it all

You want me like this
you want me like that
I can't be it all

You want me so tall
you say I'm too high
I can't be it all

You want me like me
except more like he
I can't be it all

You want me much smarter
You call me quite quick
I can't be it all

You want me to be stronger
you think me too rough
I can't be it all

Your expectations are too high
of this I cannot lie
I try to meet them all
but I'm just not that tall
I can't be what you want
I can't be it all

So please back off...