Tim Duncan was known for being a relatively quiet and humble player, but that led to some unexpected — and humorous — trash talk.

Kevin Garnett joined Showtime’s “All The Smoke” podcast hosted by Matt Barnes and Stephen Jackson and talked about trash talking. KG said one of the keys to trash talk is being able to “back it up.”

Barnes asked if there was anyone whose trash talk Garnett respected, and that’s when KG brought up Duncan.