There are countless synonyms for the phrase "funny remark" to keep you from sounding like a broken record. If you're looking for something witty and sarcastic, try "quip," "witticism," or "smart-aleck comment." On the other hand, if you're going for something more silly and irreverent, consider "gag," "joke," or "zinger." "One-liner," "punchline," and "comeback" are also great options to convey a clever witty remark. Or perhaps, you can go for some more unique options like "bon mot," "schtick," or "bit of banter." Whatever your preference may be, using a variety of synonyms will make your writing more nuanced and engaging.