I hate those paddles, too! Oh my gosh, I feel so vindicated. It’s like fingernails on a chalkboard.
Other trivial pet peeves:
Listening to someone chewing gum while you are on the phone with said person. (I know someone already mentioned bovine gum chewers, but I feel it is ten thousand times worse if you can hear it while on the phone.)
People who, for some reason, do not want to break a $20 bill, as in “could you leave the tip, I only have a $20.” It’s fine if you don’t want to spend your $20, but don’t expect me to spend my money in its place. In my life, the only people who do this never seem to get around to making up this difference (although there’s always a vague promise to pick up the next round, or something). If they did, it wouldn’t be a peeve.
Mr. Del wears socks that don’t match! For the love of all that is holy, please stop this! Granted, they may be two white athletic socks that are very similar, yet I can tell that sock A is of one brand, and sock B is of another brand. Grounds for divorce, I tell you!
At work: people who discover that a ball point pen no longer works, and return it to the supply closet. Boggles the mind. I know pens don’t grow on trees, but if it really doesn’t work, please throw it away.
People who will not drink from my glass because they don’t want my cooties, but are still so determined to sample my drink that they dip their SPOON in my glass, only it’s the SAME SPOON that was just in their CLAM CHOWDER. Ok, so this is an isolated incident, but it really happened, and I tell you, I am not over it yet.
My SDMB Pet Peeve (I like to call it “Fluffy”):
When the OP asks for something, for example “What is the best book about a cow ever?” and Poster #4 lists a certain book, and then Poster #25 lists THE SAME BOOK, and others congratulate Poster #25 for his/her excellent taste in cow literature. I am sometimes tempted to post just to point out that Poster #4 deserves all the credit, but that would be snotty. However, if you have ever been in the position of Poster #4, please rest assured that I, sitting quietly in my very own home and refraining from making snotty posts, have noticed, and thought of you with great compassion.