If someone is on the verge of being "canceled," are they getting a BAD RAP or a BAD REP? That's one example of a commonly misheard phrase that actually works both ways, which blurs the notion of what is "correct."
A website has compiled a bunch of these, and here they are, with the ORIGINAL phrase FIRST . . . and then the misheard version, which also kinda works:
1. Coleslaw . . . Cold slaw
2. Exact revenge . . . Extract revenge
3. Happy as a clam . . . Happy as a clown
4. Last-ditch effort . . . Last-stitch effort
5. Alzheimer's disease . . . Old-timer's disease
6. Deep-seated . . . Deep-seeded
7. Take for granted . . . Take for granite
8. Bald-faced lie . . . Bold-faced lie
9. Coming down the pike . . . Coming down the pipe
10. Whet your appetite . . . Wet your appetite
And it was originally bad RAP, not bad REP.