The French constrained writing group Oulipo refers to the “Canada Dry principle” — the color, name, and bottle design of that ginger ale would lead you to think it’s alcoholic, but it’s simply not. Similarly, “falindromes” are expressions that appear to be palindromes but aren’t:

O, gin, need a dingo?
So cats taste staccato tacos?
Ray, eat a ripe pirate tea. YAR!!
Mime Eminem.
A-hah! A banana ban. Haha!
“I, a CD-ROM?!” ribbed a bearded Mordcai.
A brazen zebra.
Pandas tired diet? A sad nap.
I am mad at a Canada dam, Mai!

These are from an extinct 2008 blog created by Amir Blumenfeld; there was also a short-lived Twitter account (“Able sidlers race cars, Idris Elba!”).

A working palindrome, by Stephen Fry:

Rettebs iflahd noces, eh? Ttu, but the second half is better.