Having never seen Jurassic Park (yeah, right?) I'm guessing the preposterousness to an unaware onlooker is played for effect.
This is a more recent phenomenon. This is literally just repeating a punchline so that it tells the audience - "that was the punchline, you can laugh now."
I've seen plenty but I can't give any specific examples. I mention Kill James Bond [0] because they specifically point it out in the movies they watch. Although they don't watch any Whedon movies, in talking about it in movies where it happens a lot they cite Whedon as particularly guilty of this.
This is a more recent phenomenon. This is literally just repeating a punchline so that it tells the audience - "that was the punchline, you can laugh now."
I've seen plenty but I can't give any specific examples. I mention Kill James Bond [0] because they specifically point it out in the movies they watch. Although they don't watch any Whedon movies, in talking about it in movies where it happens a lot they cite Whedon as particularly guilty of this.
[0] https://killjamesbond.com/