Naughty boy with Welshman getting stuck (7)
I believe the answer is:
impaled
'stuck' is the definition.
(I've seen this before)
'naughty boy with welshman' is the wordplay.
'naughty boy' becomes 'imp' (imp can mean a misbehaving child).
'with' means one lot of letters go next to another.
'welshman' becomes 'aled' (common Welsh name).
'imp'+'aled'='IMPALED'
'getting' acts as a link.
(Other definitions for impaled that I've seen before include "Pierced as with a stick or stake" , "Transfixed" , "Stuck" , "killed for a vampire" , "Pierced through in mid-leap" .)