In the episode "The Surplus" from Season 5, Michael Scott is looking for a senior citizen to be a part of his "Senior Tuesdays" marketing scheme. He wants one who is "short and sassy" but doesn't get what he's looking for, so he ends up just hiring Creed.
The meme uses the phrase "Can I get a new senior citizen? This one's too short for my chair" to express the desire to replace something that isn't working. It's often used in situations where someone is unhappy with a current product or service.