Watching women pleasure themselves is SO HOT!
Last night I was DATY with Mrs. CG, and I guess she wanted a lil more so she grabbed my hand and brought it to her pussy... 1 finger, then 2... she was real horny! She grabbed my hand again and brought it to her lips.... moaning and licking at the same time as I was continuing my licking her pussy. Then she started pleasuring her self with her fingers and I just had to sit back for a minute to enjoy the view!
So to answer your question... about 20 hrs.