posture as

posture as (someone or something)

To present or portray oneself falsely as a different person or type of person. Someone posturing as a security guard managed to sneak in and steal a bunch of company secrets. You only studied psychology for a single semester, so stop posturing as some sort of expert on the topic!
See also: posture
Farlex Dictionary of Idioms.

posture as someone or something

to pretend to be someone or a particular type of person. Why is the secretary posturing as the manager and giving out assignments? Carla entered the ballroom, posturing as a grand duchess of somewhere or another.
See also: posture
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • pose as
  • pose as (someone or something)
  • hanger-on
  • pond
  • a big fish in a small pond
  • a big frog in a small pond
  • big fish in a small pond
  • big frog in a small pond
  • frog in a small pond
  • change off
References in periodicals archive
"So, it's important for your posture as well as your overall health to get out and move around."
Neka Health, a health and wellness brand now provides a seat cushion that not only offers a world of comfort while sitting, but it helps with poor posture as well.
All the subjects analyzed demonstrated variations in body posture as a consequence of alteration in mandibular position.
Kenneth Hansraj, chief of spine surgery at New York Spine Surgery and Rehabilitation Medicine, defines poor posture as head in an inclined forward position and the shoulders drooping ahead in a rounded position.
At the moment of birth pangs in women in childbirth with insufficiency of mitral valve there was the decrease of CO, compensatory growth of CR and essential decrease of cardiac output up to 5.6 [+ or -] 0.25 l/min was registered in supine posture as opposed to 7.2 [+ or -] 0.33 l/min in vertical position.
This twisting motion may cause a muscular imbalance and the person is left with a twisted posture as they are being pulled out of line.
Our current posture as John Hamre mentioned, still reflects in many ways the mentality and reality of the Cold War era, during which US forces deployed forward were defensive, tripwire units that were expected to fight near where they were based.