On Sunday, Lady Gaga and Vince Vaughn joined forces with other crazy kids to jump into the freezing waters of Lake Michigan for the annual Polar Plunge, an event to raise money for the Special Olympics. Well, just how cold was it? According to the Great Lakes Environmental Research Laboratory, the surface temperature of Lake Michigan was -6 degrees Fahrenheit. Translation: ice daggers to your bones.
Here's Lady Gaga with her fiancé, Taylor Kinney:
Let it go, Vince: