Kristi Black socks grey toes after two days

Kristi showed you her socked feet afterwork.  Day 2 in these socks.  She gives you a quick sniff inside her shoes before letting you smell her sweaty socks.  She itches her rough feet in the socks.  She takes off her socks to reveal her crusty dry athletes foot feet.  She filed them the other day but they still nice and dry and crusty like you like them.  She shows off socks at end.