Oh yes. Mine is 3.6 now and this is so familiar. "I don't want it! I DOOOO want it! Waahhhhh!" He will kick off about the slightest, daftest thing - ESPECIALLY things that absolutely cannot be reversed, like you have thrown something in the bin - "I want that packet back, I want to keep it, waaaaaaillll" or you have not got to the bus stop in time - "I wanted to go on THAT bus, waaaaaaahhhh!"
I do a lot of what thisisyesterday and rudolph suggest - calm, patient, no-shit reactions -
"But I want juice not milk. I don't want it, waaaahhhh" - "You asked for milk, your choice now is milk or no milk. Do you want the milk or shall I throw it down the sink?" "I DO want it!"
And a lot of "I will stop helping you now and wait until you can speak nicely." Also a lot of distraction - "DS, what IS that in the sky, what is that white thing!!??" as if I have no idea, then he can take great delight in explaining to me (in this case a vapour trail) often works to deflect a full-on screaming fit.
But it's so exhausting - and what gets me is, when's he going to learn? He KNOWS that whinging and kicking off NEVER gets results. He knows how to ask nicely and behave - and when he does he's lovely and gets lots of attention. Yet off we go again with another screamer, many, many times a day.....
I hate it when I feel relieved to drop him off at nursery - but there have been several times I've felt that since he's turned 3.