I see 6 letters in "the past."
I have 2020 vision.
I see 7 letters in "the future," I have 2021 vision.
Past and Future Vision
Explanation
Explain Bear
Listen up, buttercup. This joke is all about wordplay. In "the past" there are six letters, so the speaker "sees" 2020, get it? Then in "the future" there are seven letters, so the speaker "sees" 2021. I bet you still don't get it, do you?
Gwen
Thumbs up for trying ;)