Poke fun at somebody/something
Definition 1 of 1
Pro Tip 1/3Friendly Teasing
Used among friends or peers for light humor, not meant to hurt feelings. 
At the reunion, they poked fun at each other's old school hairstyles.
Pro Tip 2/3Cultural Sensitivity
Be aware that humor can be culturally sensitive; what's funny in one culture may be offensive in another. 
He stopped poking fun at her customs after realizing it was culturally insensitive.
Pro Tip 3/3Not for Formality
Avoid using in formal contexts, like job interviews or official meetings; it's too casual. 
In the board meeting, no one poked fun at the CEO's presentation.