Let's reconstruct this sentence.
"Everyone I know complain" doesn't make much sense.
Popping an "s" on the end of "complain" might do the trick, lets try!
"Everyone I know complains" ah, there we go. Much smoother.
Next section!
"Complains because these days backpacks weigh a ton."
Though this may sound correct, it is still quite a bunch. Let's fix that.
Rearranging your words might work.
Maybe in the section that says "Complains because these days" we can change that to "Complains these days because" Much smoother, and easier to read.
We have so far is: "Everyone I know complains these days because"
Yay, let's continue.
The remaining of the sentence is fine so we can put it on the end of our freshly constructed sentence.
Our final sentence should be:
"Everyone I know complains these days because backpacks weigh a ton."
Personification is a figure of speech in which a thing, idea, abstract quality, nature, emotion, event, or inanimate object is given human characteristics or qualities, such as the ability to think, to speak and to write. This figure of speech is often employed to give readers different insights about something and to make the writing more vivid or memorable.
What human qualities are given to the thorns in this sentence?
The thorns are given the quality of intentionally grabbing something as if they had the ability to think and perform such action.
What does this example of personification literally mean?
It means that the thorns got stuck in the speaker's t-shirt and prevented her or him to pass or walk smoothly.