Drink is like lemon juice with no head - the word on the street is they're presumably passing on that in the local? (6)
I believe the answer is:
rumour
But I can't explain it at all! Could you help me understand?
(Other definitions for rumour that I've seen before include "Information that may well not be true" , "What "a little bird" tells you?" , "Hearsay, gossip" , "Unverified report" , "Story going around" .)