1 Soldier Ishmael: Quick, docs! You're supposed to be doing the alien autopsy in here!
2 Young Jamie: It looks like we already are.
2 Scientist Jamie: Who are you?!
3 Young Adam: We're your grandsons from the future. We've come back in time to propose a dangerous scientific experiment.
3 Scientist Adam: Hmmm. Go on.
4 Teenaged Jane Goodall: Wow, it's like an acid wash for the fabric of reality.

Apparently acid washing was invented in the 1980s (in our timeline). But I thought it was funny enough to use here without regard to any worries about anachronism.

Hopefully enough readers are old enough to remember acid washed jeans, and thus understood the joke here without needing to look it up.

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2024-03-03 Rerun commentary: I wonder if you do alkali washing of jeans, and what that would turn out like. Actually, bleach is strongly alkaline, so probably just bleaching.