MrHorgy is fully correct - a typical removable 737 exit overwing window should be thrown out... probably will fall on top of the wing. There is a bad problem - which is emergency evacuation training - In an evacuation from a 727 some 20 years ago, the crewmember removed the window-exit assembly, and put the unit on the seats near the exits... apparently, he fought against the push of passengers trying to exit the plane...
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When asked by the NTSB "why did you not throw the unit through the exit" the crewmember said "I did exactly like they showed me to do in training, that is leave the unit on the seat next to the exit..."
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Exactly what NOT TO DO... If you are an instructor and discuss evacuations, insist on the facts and difference of training versus real life situations, especially with newly hired crewmembers.
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Happy contrails