Conversation so far:
what does the guy say in just by radiohead
The Radiohead music video for Just is intentionally edited to make proper lip reading impossible, if something was indeed said at all.
what is one possibility of the spoken words at the end of the song just?
One possibility of the spoken words at the end of the  Radiohead song Just is I'll tell you wh-- [jump cut interruption] I'll tell you why“

Question: what is another possibility of the spoken words at the end of the song?
Self-contained rewrite: what is one possibility of the spoken words at the end of the song just besides I'll tell you wh--, I'll tell you why“?