Clamber in presumptuous heirs

twigs can tire themselves up to speed 
assumptions tug
  trudging, blanching, through trough and slough
and weather seems whether rather but really neither
and it seems obscure rather than spry
                                   more rather spry than vacant than clear
                      more rather obscure dry then bland then near.
  supplant  
And it seems 
it seems, 
twits can toil for feed
         callous breeds countenance splits need
         long distaste acquaintances and slow pace sleaze
and even twigs can tolerate phase
and even razing, the twigs have tolerated
                      even razing amongst disparity, 
raising uneven without clarity, conscience, caring
lest twits tire themselves up to speed
   uproot to rarity