Other variations include:
'I bwoak ma but'
'I boak ma boat'
'A buk ma but'
(It is refered to as 'I broke ma boat' because it is the only possible sentance that makes sense'
Person 2: Well duh, you just bought them.
Person 1 (while pointing): I BROKE MA BOAT!
Person 2: What?
Person 1 (after swallowing): Look, theres the hat!
Person2: So it is.