Commonly found variants; note these may range from acceptable alternatives to non-standard forms or incorrect spellings*.
* Singlish is a largely spoken creole, and as such descriptivism (recording forms that reflect actual pronunciation in spoken language, or as appearing in the linguistic corpus) is more pertinent than strict prescriptivism. Nevertheless, the use of more standard forms (or for words originating in languages with Latin script, such as Malay, accurate to the original spelling) is recommended and encouraged.

also can:

putanginamo putangina mo

putang ina mo

Tagalog:

putang ina mo

expand for details Detailed etymology

definitions

noun

  1. (vulgar, offensive) your mother is a whore; fuck you

interjection

  1. (vulgar) 'fuck!'; 'son of a bitch!'; extreme exclamation of anger, displeasure, frustration, contempt, incredulity, disbelief, shock, etc.

usage notes

Borrowed into contemporary Singlish from interactions with Tagalog speakers, for example through online games such as DotA, and other general Filipino cultural exports and memes.
Often humorously minced to put tank in a mall.


other credits:

J for the suggestion.