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 didn’t believed me, but when they noticed that I was really stunned and shocked, so they looked around the house but nothing suspicious was there.