Out of Topic

Having read some Malaysian forums lately, the phrase; "out of topic" jumps up at me.
This seems to suggest that the contributor has run out of ideas,but in fact the phrase is used to convey the fact that the contributor wishes to digress from the main thrust of the discussion. An aside as it were. Going off at an tangent even.
Oh!.... the joys of Manglish. (Malaysian English) Don't you just love that Portmanteau word? Doesn't it conjure up an image of English being mangled!?!