Take a wrong turn on your bike (3,4)
I believe the answer is:
get lost
'on your bike' is the definition.
(both are rude ways of telling someone to go away)
'take a wrong turn' is the wordplay.
'take' becomes 'get' (synonyms).
'a wrong turn' becomes 'lost' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'get'+'lost'='GET LOST!'
Can you help me to learn more?
(Other definitions for get lost that I've seen before include "Sling your hook!" , "stop interfering" , "Stop pestering me!" , "Begone" , "Go away or go astray" .)