"Get stuffed" is an expression used to tell someone to go away or to politely express disagreement. However, some may find the phrase inappropriate or rude in certain situations. If you're looking for alternative ways to express the same sentiment, there are several synonyms you can consider. For example, you can say "get lost", "take a hike", "buzz off", "beat it", or "scram". Other phrases include "go away", "leave me alone", or "back off". Choosing the right phrase to use can depend upon the context and the person you're talking to, but these synonyms provide alternatives to "get stuffed" that convey a similar sentiment without being as harsh.