People who say 'pacific' when they mean 'specific'.
Grates on my senses like fingernails on a blackboard.
My old boss used to do that, I think its because the can't pronounce it correctly.
They. Tut tut!
"Absolutely" when "yes" would do, or "certainly", or anything but "abso-f*cking-lutely"
Anyone over the age of 12 responding with "Cool" to mean they are thankful or pleased.
"Baby/child on board" signs in cars - what purpose are they apart from a smug two-fingers to the childless? Also "Princess...", "Cheeky monkey...", "Grandchild...."
Your and you're getting mixed up.
Double negatives................"I ain't done nothing wrong".
As well as mixing up 'there', 'their' and 'they're'
Along with saying the letter 'aitch' as 'haitch'......
I'm loving this, an ode to the tolerance, sense of proportion and balance of the middle aged Englishman. And those of you how do not think you are yet middle aged, bad luck, your heads are there already.
Keep it going, we'll cover all of my extremely long list of pet hates eventually.........
I see that Iwas has already picked you up on the use of the present continuous tense.
People who say 'pacific' when they mean 'specific'.
Grates on my senses like fingernails on a blackboard.
Your and you're.
Incorrect use of less and fewer (Tesco please note "5 items or less" is wrong, it is "5 items or fewer").
The incorrect use of eldest when the correct word should be elder.
The common belief that any noun can be used as a verb. Some one on the radio today sad that "the newly formed international business would be headquartering in England". Headquartering!!!!

If I want some vegetables with my meal, then I want some vegetables, I do not want a "side" of vegetables. If I want cheese on my burger, I want cheese and not some luminous plastic-like mastic gun applied gloop called Jack or Colby Cheese. I have and will never "diss" someone as I do not recognise "diss" as a verb. I am not so ancient at 46 to fail to understand "diss" to be a way for certain children to say the word disrespect without them suffering the awful trouble and apparent difficulty in pronouncing a full three syllables. Seems ironic to me that the type of person who might complain about being "dissed" is exactly the sort of person who could perhaps struggle to earn respect. Oh yes, and the salutation "respec".
Could the elder son not also be the eldest ? #justasking
EDIT...People who use "#"![]()
See post #9. Well it is about pedantry this thread.