now a response from a guy...
I think disproving someone is a big one. I got that from my mom, my sister, and her bf, ****ed me off. My mom later apologized though. The fact that they say "there's no way you can" just makes me so pumped! I have gotten past the point of "i have to look like _______". I do it for me, and to disprove and achieving goals is a biggie as well.
No offense to the ladies