Please Explain

Obviously a lot of what goes on ChemScrapes is for a limited audience. Below is a cartoon that was drawn for universal appeal..."Not tonight dear, I have a headache." But who gets it? I am not even sure all chemists would get it.

- Not tonight dear, I have a terrible headache!

On the left is O-acetyl salicylic acid (aspirin). On the right is ibuprofen...........the drug that every parent knows about when the paracetamol doesn't do the job. It is at least ironic, if not funny.

All images © Brendan Burkett. All rights reserved.