Sit tall in the/(one's) saddle verb phrase
The verb "ride" can substitute for the verb "sit".
To act or conduct oneself in an imposing, impressive, resolute, or manly manner or composure
The warrior still sat tall in his saddle after being defeated by the enemy.
He still sat tall in his saddle in the face of their aggressive threats.
To behave rudely or impolitely
1. To hold (one) hand and move it up and down.
2. To give (one) a high five.
Someone makes an attempt to seem more important, more intelligent, or of a higher class than you really are, usually through their manner, affectation, appearance, or behavior.
Good form is behavior or actions that are socially appropriate while bad form is rude or inappropriate behavior or actions.
The verb “sit" should be conjugated according to its tense.
To do something in an unusual way
I guess I like to run against the grain in everything I do.