When this 86-year-old grandmother came across a group of baying lads on a packed commuter train, she had only one response.
To the surprise of onlookers, she limbered up and crowd-surfed her way down the busy carriage.
And when she finished, she even did a headstand for good measure.
Watch the video, above.
The woman - whose name is not known - simply walks away from the group after her spectacular performance.
Life goals for all of us.