What walks on four feet in the morning, two feet at mid-day, and chicken feet in the evening?

Shirt Info: Unisex screen printed on soft, comfortable, and socially responsible American Apparel 2001 or Gildan 64000 Softstyle in mint! Fitted/Ladies screen printed on American Apparel 2102 or Next Level 1510 in mint. See first, ! Baba Yaga Shirt