I just really need to get this off my chest, my heart is pounding right now.

My sister has just gone out with her friend who is staying at the house tonight. I walk upstairs to my bedroom and notice the girls overnight bag. I start rifling through, just to have a look and i find some panties. All of a sudden i have my face buried in them and im masturbating.

i feel so wrong stealing someone's panties but it was so good! :/