It's not wise doing ANYTHING in a PA38, and least of all trying to fly the thing. Maybe sitting it in it parked on the ramp, watching the planes on the runway, with a good book and a glass of something, would be OK, though a deckchair would do the job better.
I would add that if you sat inside a PA38 on the ramp and it started to rain, 2 things will happen
- you will get your feet wet as the water rises on the cockpit floor (due to perished door seals). Eventually new forms of intelligent life, optimised for flying NDB holds, will evolve in that
Primordial soup.
- the plane will get heavier and heavier and eventually the landing gear will collapse, as the fuel tanks fill up with water (due to perished filler cap seals). Water is 1.38x heavier than avgas and that will be enough to collapse the landing gear.