Thigh fat?

theinujn is right. You cannot get rid of fat in one specific area. Do all the lunges you want but you will just have muscle covered by the fat. In order to lose fat you have to do a cardio workout at least 3 times a week, preferable more. The fat will eventually leave but in all areas, not just one.

how do I go lunges?

This is easy to address. Mix cardio workout - cycling and running are excellent fat burners for your legs with some toning exercises to tighten and tone your legs. I have put some exercises just for legs on my blog with pictures to show you how to do them. Good luk http://instantfeelgood.blogspot.com/2008/05/nice-legs_7918.html

I don’t know how many times I’ve said it but you cannot pin point fat loss…

Fat is a overall thing. You will lose it evenly over your entire body.

You can “tighten” an area but that is only for so much. Afterthat, it is all losing fat.