My visual acuity 
 is not as good as it might be 
My hearing too is failing fast 
 not half as good as in the past. 
I fear I’m on the downward slope 
 but still I’m cheerful and I hope. 
They’ll last me for a few years yet 
  although sometimes I forget 
exactly just how old I am. 
I do not give a tinkers damn. 
I’m still alive I don’t complain. 
 Each day I wake up is a gain 
 another opportunity 
To misbehave outrageously..
ivor or ivor.e hogg
http://www.poemhunter.com/poem/shameless-3/