Numberless photos of foolish people (4)
I believe the answer is:
saps
'foolish people' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for saps that I've seen before include "Coshes" , "mugs" , "Weakens, deprives of energy" , "Drains energy from" , "Pass around foolish people" .)