ИИ:
The phrase "get off on a good bunion" is not a standard or recognized idiom. It appears to be a nonsensical or humorous play on the phrase "get off on the right foot," which means to start something well or make a good first impression, according to "Bunion," referring to a foot condition, is likely substituted for "foot" to create a humorous or absurd image. Therefore, the phrase is likely intended as a joke or a nonsensical expression.
A bunion is a bony bump that forms on the joint at the base of the big toe. It occurs when the bones in the front of the foot shift out of place, causing the big toe to angle towards the smaller toes and the joint to protrude. While bunions can cause pain and discomfort, "getting off on a good bunion" doesn't have any established meaning related to the condition or its treatment.