If it is getting uncomfortably hot while you're doing those tasks, then something is wrong. Perhaps you have some background process that is eating processor time and causing excess heat. Perhaps you have a hardware problem. It's hard to say at this point. I currently have my MBP resting on my bare legs (I'm wearing shorts, get that thought out of your head! 😉), and it's no more than a little warm.
One thing to try is resetting the SMC. Sometimes that can have an effect on heat. If it doesn't help, try booting in safe mode and using the computer for a while as best you can given the limitations of safe mode. If the problem goes away, and comes back as soon as you reboot normally, it's probably a third-party software issue.
Regarding the "MacBook Pros are not laptops" comment... those inevitably show up whenever anyone admits to using one on their lap. I very rarely use mine anywhere else, and it's very rarely a problem. The ventillation of a MBP is no worse than that of any other notebook computer, and better than many. The vents are hidden, in the hinge.