Fool tinkering with electrics round plug initially (5)

I believe the answer is:

twerp

'fool' is the definition.
(I've seen this before)

'tinkering with electrics round plug initially' is the wordplay.
'initially' indicates taking the first letters.
The initial letters of 'tinkering with electrics round plug' is 'TWERP'.

(Other definitions for twerp that I've seen before include "Nincompoop" , "Numpty" , "Twit" , "Silly-billy" , "Idiot" .)

I've seen this clue in The Sun.

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