Bride kissing a fish

This photo of a bride kissing a fish instead of the groom is a physical optical illusion created by reflection.

Source: IDidNotGetTheReference

This is an optical illusion created by reflection (and perfect timing). The reflection is the strongest when there are no close objects behind the glass, as you can see in the reflection of the bride. However, when there is an object or fish close to the glass, the reflection is hard to see. The grooms reflection is barely visible, creating the illusion of the bride kissing a fish.