Despicable person picking up last bit of pancake (5)
I believe the answer is:
creep
'despicable person' is the definition.
(creepy person)
I can't explain the rest of the clue.
(Other definitions for creep that I've seen before include "Slow motion" , "Of plants, to grow along the ground" , "Walk slowly, silently" , "Sycophant" , "Inch" .)