why does this happen?
97487
Because society is full of ignorance unfortunately.
287552
excitement causes it.\nits a lubricant\nyour lubricant porthole is set a little closer to your opening than normal.
110327
Some of the time it just happens. Maybe caused by naturely or sometime's by how you take care of your body like the kind's of food you ear, exercise, stuff like that. It could also happen by accidentally bruzing like something or someone hiting the puppy. Make sure you get those mamograms on a yearly basis... Dr Checko... (Nickname)
646448
Its really strange you should say that. This has happened to two mates of mine recently. Maybe there is something in it..........
657465
I have heard that the reason that happens is because you are nervous possibly\n:)
507921
I am confused....what is happening?
419305
Oh wow, I get that all the time. Usually it is because you haven't had enough sleep, or because you are too tired. We do this out of protection, but it can be a very scary thing.
135094
Maybe its from friction, with your clothing or something...
1013494
I think it happens from an excess of silicon and suns rays. Oh, and drugs, lots of drugs. I don't know, I am just hanging around here to see what kind of answers you get.
626697
Restart the PC. this kind of things sometimes happen.
751679
that happens to me all the time. just re open the internet, or it could be your wireless internet
1043971
Am I the only one who gets this?
367197
Are you sick? It could be a fever. I have had that happen to me.
170957
Yes. Happens to me all the time. \n\nThe problem seems to be with Yahoo.
634507
I've never had that problem.\n\nOK, ignore the above, I just had that happen, and it was frustrating 'cause I really wanted to answer a particular question. What's up with that?
621912
This is called the Mpemba effect.  It occurs for other reasons than the temperature of the water,  Mostly because of the different characteristics of water at different temperatures.  This Site has a lot of information about it.
553249
same thing happens to me it is really annoying