I've used something more lame than that. I was in a little town for a college internship for the summer. The girl living next door was interested. I noticed that she had a nice chest even though she was wearing coveralls. She left a note on my apartment door with her phone number (I know, it sounds like a Penthouse Forum story). I called her up and said something like I've slept in the same bed with a girl without doing anything (yeah right).
I called the next night to see if I could come over (it was 10:30 at night). I walked next door to her apartment and she was wearing a tshirt and some gym shorts. I was already at full mast before showing up at her place. I asked if I could use the restroom. I needed to do some last minute adjusting. When I came out of the bathroom she was already in the bed. She had changed into a half tshirt and panties. Her breasts were hanging out from the bottom of the half tshirt. I thought she really doesn't expect me to lay in the bed with her and not touch her. This should be like taking candy from a baby.
I laid down next to her and put my hand on her breast and asked if I could hold this. Notice how I already had my hand on it and then asked to hold it, lol.
I held her breast for about 15 minutes. I figured I'd lol her into a false sense of security. I slipped my hand into her panties and started fingering her clit. This woman turned into wild thing. On every stroke all she did was say yes, yes, yes. I tried to kiss her and she pulled away to continue with her yes, yes, yes. I pulled my hand away and she tried to move her body next to hand, so I figured I better finish fingering her. So the next morning I was leaving and she said I told you what happened wasn't supposed to happen. After she said that she reached into my shorts and started jacking me off. I didn't have sex with her until the second meeting. She was definetly, the most sensitive woman (in the clit) I've ever been with.