Octogenarian (Adjective) between 80 and 90 years old.
Woah, now, buddy. Before you go casting aspersions on these lovely ladies, you just wait until you're an octogenarian. Then come back and let's talk, kapisch? (That said, Bea Arther could've made a better choice than flip flops -- 90-year-old feet ought be kept under wraps).

