If you pour hot water into a plastic cup, does it make the cup shrink? Or am I going crazy?

I made tea in a plastic cup and left it next to me unattended for a couple of minutes. I just went to pick it up and I swear the cup shrunk a few inches. Is that suppose to happen? Or am I going crazy? Anyone know?
This is completely normal and expected
You're crazy
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If you pour hot water into a plastic cup, does it make the cup shrink? Or am I going crazy?
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