Red Bull teases Mercedes: 'That long-awaited rain at the Red Bull Ring'

For the Grands Prix of Styria and Austria many teams, including Mercedes, hoped for rain. This would significantly improve the other teams' chances of good results. The rain didn't come, but Red Bull Racing shares the 'rain' on their Twitter channel.

Prior to the Austrian GP Mercedes posted a picture of the intermediate tyres indicating that they might still be used. The German team had been saying all week prior to the race that they would be hopelessly out of contention for victory, but rain could have been a bit of a boost for the team.

Now almost a week later Red Bull responds with a tweet. They also talk about rain, but not the rain that Mercedes meant. Is this a small tease from Red Bull to Mercedes?