Rudely swearing after the escape of new bugs (7)

I believe the answer is:
earwigs
'bugs' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for earwigs that I've seen before include "Eavesdrops on the insects" , "Bugs" , "Insect with pincers" , "listens in furtively" , "Elongated insects" .)