The art of using underhanded tactics to get what you want.
Manipulative and Exploitative tactics are often employed by those with a certain... let's say, "flexibility" in their moral compass.
Example: Using a friend's birthday as an opportunity to get them to do your laundry.
"Hey, buddy, I'm really worried about you! If you're not doing your laundry, it might just get all moldy and start a fire!"
Example: Using a fake 'study' to justify a ridiculous purchase.
"According to my totally-not-made-up study, 9 out of 10 people who buy this product report a significant increase in their sense of self-worth!"
Remember, these tactics are not to be taken lightly. Use them responsibly, or risk being called out for being a sociopath.