Leap of Faith
Jumping or being thrown through a glass window (aka being defenestrated) happens all the time in movies, especially Westerns. Normally, the subject dusts themselves off, adjusts their hat, and walks away uninjured. In the real world, being tossed through a window results in numerous life threatening cuts and lacerations.
Roleplaying games can vary between the two extremes of window hurlage being an inconvenience and a death sentence. I believe 3rd Edition formalized it as 1d4 damage, so it was dangerous at 1st or 2nd level but largely ignorable at high levels. Which makes some sense, but then you wonder how being skilled at fighting and deflecting blows translates into surviving shards of glass. Like falling, it’s probably one of those things it’s better not to think too hard about.
I remember that once the gracile bard of a group I was DMing for entered an ill-reputed tavern by the docks, and tried to stop an argument between his party and a bunch of fishermen and shady adventurers.
He rolled a 1, and was promptly thrown through a window… which I previously described as a fixed one, with sturdy oaken frames dividing it in small rectagles, filled with thick stained glass.
Since the thrower was a raging barbarian, the poor bard took serious damage and ended up unconscious against the wall on the other side of the alley, after breaking (and being broken by) the window. The tavern was thereafter renamed “Ye Flying Bard”.