Nope! Just hit my head on the mirror. It's definitely NOT a gateway!
Sounds creepy, but just in case don't stare for to long in the mirror or you might get absorb and transported to a parallel universe where you and your copy will fight for the right to be recognize as the original copy.
At last, someone has seen the light!
Would it take 7 years to get there after you jumped in and broke the mirror?
astral world ... astral travel