Barbarians do it screaming.
Fighters lack the skill set to do it very well.
Bards do it rhythmically.
Rogues do it silently.
Artificers build things to do it for them.
Ninjas do it all the time, but no one ever notices.
Rangers prefer to do it alone.
Wizards always want to rest for a day before doing it.
Crusaders have the stamina to never stop doing it.
Psions like to do it bound and gagged, just to show off.
Monks can do it with any part of their bodies, even with their hands full.