The phrase "kiss my arse" is often used as a slang insult to show contempt or disrespect towards someone else. However, there are many synonyms for this phrase that can be used to convey similar meaning without resorting to vulgarity. Some examples of synonyms for "kiss my arse" include "buzz off," "get lost," "go jump in a lake," "shove it," "take a hike," or "stick it where the sun don't shine." These phrases are less crude and impolite, but still get the point across that the speaker is annoyed or angry with the other person. It is important to choose your words carefully to avoid offending others unnecessarily.