The image presented is a close-up photograph of an elevator control panel with floor buttons for the second, third, and fourth floors. What stands out immediately is the missing button for the first floor, and in its place is a blank space where the button likely used to be.
At the top of the image, there's a caption that says, "Someone rubbed one off in the elevator," which uses an idiom generally used for a different kind of activity, meant to humorously imply that someone has physically "rubbed off" the button for the first floor from overuse or vandalism.
The humor in the image is primarily derived from the wordplay within the caption, which takes advantage of the double entendre in the phrase "rubbed one off." The phrase is colloquially used to refer to a sexual act, and by pairing it with the image of the missing button, it creates a pun that catches the viewer off guard with an unexpected twist on the phrase’s meaning.
Additionally, the situation alluded to by the caption is incongruous and absurd, because elevator buttons are typically not "rubbed off" due to the materials they are made from and the way they are used. This exaggeration of what it might take to remove an elevator button contributes to the overall comedic effect.
The social media handle “@whatsupboosh” is included at the bottom right of the image, suggesting that the image may have been shared or originally posted by this user Someone rubbed one off in the elevator whatsupboosh