I had this weirdish dream twice?

i dreampt that i was riding on a crowded school bus an night and suddenly this tyranosoraus rex came from nowhere and started chasing the bus. we sped forward but then everyone turned to me and said it ws my turn. i was like what and the other student on the bus said to get the dinosaur to stop chasing us, i had to get out of the bus by myself and run on foot away from him. i got out of the bus and the t rex roared and started chasing me. i ran like crazy as fast as i could and somehow got away from him and into a supermarket to hide. i saw some of my friends there and they said the t rex can smell me and would find me so i have to leave in the next 5 minutes to not put everyone in danger. my friend said he wouldnt eat me if i said something that sounded like this, "jhdfkshfuirhkgfnfjdsjhfkjsdkfh" . i kept asking my friends to repeat but each time they sai it, it sounded a little diffrent and i could remember it. when the time came, i walked up to the scary looking t rex, tryed to say the word but couldnt, and woke up before being eaten