Why did she pee differently?

My friends and I had a party at my house last night and ended up playing truth or dare. One of my female friends was dared to pee in a cup. She squatted over the cup and her pee came out, but then separated into two separate streams and continued to flow that way. Later she was dared to pee outside (such ashame), but she did it and squatted and went. But this time, her pee came out in a massive gush and didn't separate. I'm confused as to why she peed differently second time. Anyone know?
Why did she pee differently?
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