Relativity

This week I visited my relatives' house and in almost every case, the relative who opened the door (was my aunts in all the cases), I found them staring at me for few seconds, then when I greeted them, they smiled at me and welcomed me. Rest everything went good and I had a great time.

Today I looked at the mirror while brushing my teeth and realized the reason:
I hadn't shaved for 3 weeks!