My parents were working on the house interior, we were building our house, and I was messing around and playing in the living room.
I looked through the window and saw an alien.
He was grey colored and not very tall, my shoulders height, with big black eyes and small mouth.
I was looking about 5 seconds at him.
I was 6' away from him.
Then called my parents to look for the alien.
At first they didnít believed me, but when they noticed that I was really stunned and shocked, so they looked around the house but nothing suspicious was there.