If you cup your lips just right making a nice closed seal over their open mouth, you can blow it out. Bad joke...don't try that....I just wanted to add my vote with those telling you that, like probing, it isn't so much just where and what to push but how exactly to hold and possition your fingers..or as important anyway....really is something that needs to be taught in person. After the third meal is probably best...I've never been able to hold out that long though and usually do it just before the second...but I'm a rebel.
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