If your mother-in-law was that accepting of you I find it very selfish for you to push that boundary; there is accepting; but then there is downright awkwardness.
Recorded, Encoded and Uploaded by me. A 23 second clip of that scene (good quality with sound) 3.35mb avi.
http://www.megaupload.com/?d=WDGQKC0K
http://www.sendspace.com/file/dkr38m
~ Baby Tommy