Video: Umpire gestures Ashish Nehra to keep quiet
It is but natural for a bowler to appeal everytime he sees a glimmer of hope arise in the form of a wicket.
Ashish Nehra appealed for an lbw against the powerful West Indies batsman, Chris Gayle. This ‘not-so-bad’ appeal was rejected by the Australian umpire Daryl Harper by a unique gesture instead of just a typical shaking of the head.
https://www.youtube.com/watch?v=zibQ5BL70Kw
The role of an umpire is tough. Probably realizing this, the disappointed bowler does not argue with the umpire and gets back to fielding.