Is there a drug problem within Bob's Burgers?

So, this is an odd question due to the nature of the show, but I've noticed that Bob's Burgers has made reference to abusing pain killers more than once.

1. Bob has to take pain killers during the burger boss episode. He ends up using them liberally. "Better take one more just in case" I believe he says at one point. The episode ends up with Bob getting whacked out on pain killers and chasing some bully kids because he thinks they're from the game.
2. Bob gets high from pain killers in the episode where the family goes to a beach house to help Teddy. The Belchers end up going inside the house and start messing around when eventually Bob falls and hurts his back. When the home owner arrives, she gives Bob some pain killers and keeps giving him pills during their stay. When they drive away, Bob asks for more pills and the home owner gives him more.
3. Sargent Bosco says, "I like to take pills; the bad kind that make you feel good" during the speed dating episode.
4. Bob breaks his leg in "The Wolf of Wharf Street" and after taking pain killers, thinks Teddy is a werewolf (thanks to DForck42 for this one)

There are 2 more occurrences, but I seem to have forgotten them now that I'm writing the question.

So, is there deeper meaning behind this? Is it possible one (or more) of the writers or maybe someone else related to the show deliberately tries to emphasise substance abuse? I mean, it's funny to see Bob high, but it seems too coincidental.