Jus hit the insert key....it toggles back and forth from insert text to overwrite.
Well if your partner is laying down you can get it where the from part meets the end part (pussy and anus meet) and start pulling until it is off as for other positions simply go from side to side to...
Your question needs to state what you are asking about more specifically; what are you trying to get to?
Try looking at Roger Glover's song 'The Mask' That might be what youre looking for.
12 min
5 mins