Snake bite gets you showing off (8)
I believe the answer is:
boasting
'showing off' is the definition.
(I've seen this before)
'snake bite' is the wordplay.
'snake' becomes 'boa' (boa is a kind of snake).
'bite' becomes 'sting' (synonyms).
'boa'+'sting'='BOASTING'
'gets you' acts as a link.
(Other definitions for boasting that I've seen before include "Preening" , "Talking conceitedly" , "Bragging, showing off" .)