You could make use of 'is absentmindedness and let 'im think as 'e broke it 'isself.
Foster slouched into his seat with his customary air of absentmindedness.
He picked up his hat, that he had thrown on the floor in his absentmindedness, and drawing on his overcoat, made his way thither.
He crammed his cap back again into his pocket and re-entered the office, assuming an air of absentmindedness.
Schloesser observes that he never detected the least sign of absentmindedness in Beethoven.
There are many amusing anecdotes told of his absentmindedness about everything not connected with his art.
Dora did not play badly, but an absentmindedness which was commonly observable in her had its effect upon the music.
Jeekie rolled his black eyes round the room and in a fit of absentmindedness helped himself to some more whisky.
They made all sorts of silly remarks about absentmindedness, only exposing their own empty-headedness thereby.
I must repeat to you what I was saying and which your absentmindedness at the moment prevented you from hearing.