Boy’s engaging ME strip, casting article in Serpentine (8)

'serpentine' is the definition.
(both can mean twisting or bending)

'boy's engaging me strip casting article' is the wordplay.
'boy' becomes 'ziggy' (boy's name).
'engaging' means one lot of letters goes inside another.
'me strip' becomes 'gaza' (the Gaza Strip).
'casting' indicates named letters should be taken away (as in casting away).
'article' becomes 'a' (example of the part-of-speech).
'gaza' with 'a' taken away is 'gza'.
'ziggy' going around 'gza' is 'ZIGZAGGY'.

'in' acts as a link.