Mike Tyson says he was NOT inebriated, stoned or punch-drunk during his bizarre "Good Morning Britain" interview ... explaining Tuesday he was just REALLY tired!!
Tyson had joined Piers Morgan and Susanna Reid to promote his Nov. 28th boxing comeback vs. Roy Jones Jr. ... but once the interview kicked off, it was obvious something was just off.
Tyson slurred his words, looked away from the camera, and at one point, he even appeared to doze off.
The whole scene was very unusual .