If you want to give yourself time to reply to a message on WhatsApp without the other person seeing the dreaded blue ticks. this trick will help. It lets you read a message without giving the game away.
now open your whatsapp and go to settings menu like this
click on top right option and new options bar will open. and click on settings option
now click on the "ACCOUNT" option like this
now a new options menu will open
click on "PRIVACY" option like this
now more option comes up.
scroll down and you will see a mark option having a title "READ RECEIPTS" like this
make it "UNMARK"
now blue ticks will not appear on your sent messages to others.
you can "UNMARK" like this