A storm in a teacup
Definition 1 of 1
Pro Tip 1/3Exaggeration
Refers to making something insignificant seem huge or dramatic for no good reason. 
He's moody over the game loss, but it's just a storm in a teacup.
Pro Tip 2/3Minor Disputes
Often used when small disagreements or conflicts are blown out of proportion. 
The office argument seemed serious, but it was a storm in a teacup.
Pro Tip 3/3Misperception
Alerts the listener that the issue at hand is perceived as more problematic than it truly is. 
Everyone panicked about the policy change, but it turned out to be a storm in a teacup.