Wiktionary
n. 1 (context dated English) a pie made from the offal of deer or hog 2 (context idiomatic English) humility, being humble
Wikipedia
Humble Pie was an English rock band formed by Steve Marriott, in Essex during 1969. They are known as one of the late 1960s' first supergroups and found success on both sides of the Atlantic with such songs as "Black Coffee", " 30 Days in the Hole", " I Don't Need No Doctor" and " Natural Born Bugie". The original band line-up featured lead vocalist and guitarist Steve Marriott from the Small Faces, vocalist and guitarist Peter Frampton from The Herd, former Spooky Tooth bassist Greg Ridley and a seventeen-year-old drummer, Jerry Shirley.
Humble Pie is the third studio album released by English rock group Humble Pie in 1970, and their first with A&M Records.