It definitely depends on the situation you're in and what music is playing. Technically there is no should and shouldn't when it comes to dancing as log as you have good rhythm.
If it's ballroom dancing then you lead the girl around and twist! Whereas if it's more modern hiphop you aa stated 'pop it' haha.
Just like everyone else, according to the beat or rhythm.(it will vary from personality to personality & of course different styles of music, song to song depending how it was made & for what type of dance.)
Hope that helpes.
show me how to pop lmao