Since I have learned that you ZEKE SAYER are 13 years old I will try and help you out with a more basic example.
Sound travels as a wave, now when waves are travelling in different directions they pass right through each other with no problem. However, when two waves are travelling together in the same direction they add up to form one new wave. The best way to visualize this is water. If you are at the beach you can see the waves rolling in. If a boat goes by, its wake forms waves too. Sometimes these waves roll in at an angle and both sets of waves are undisturbed. However, if the waves come together in the same direction they will swell up to make one big wave.
If the waves are similar, and they start and end at the same time, then they form one big amplified wave. They are considered to be in phase. If the waves start at different points, the high areas of one wave fall into the low areas of the other, and they make a distorted version of the two waves. They are out of phase.
So if you record one source with two different mic's you end up with two sound waves. If one mic is a little farther away then the first, the source sound wave will get to it a little later. When you play them back together, the second wave will be out of phase, and it will sound funny because the two waves are adding up to form a third wave that is a combination of the first two.
So, the phase of the wave is just when it starts. Hope this helps. By the way, if your real name is Zeke Sayer, that is a pretty cool name.