ok history time

this dork just called a river bet (mind you a nice sized one) with king high the hand before

Poker Stars
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players


Pre-flop: (5 players) hero is CO with
UTG folds, hero raises to $4, 2 folds, BB calls.

Flop: ($8.5, 2 players)
BB checks, hero bets $8, BB calls.

Turn: ($24.5, 2 players)
BB checks, hero bets $23, BB calls.

River: ($70.5, 2 players)
BB is all-in $23.6, hero ??

I asked if he would show and he said "yes" which to me is a big indicator of a weak hand, but I don't see how I can call.

or do I have the odds to call? Man