One of the things that my friend picked up from his Chabacano roommates is the word chinga, he tells me. Indeed, if you listen to Chabacano spoken between friends, you would hear a lot of chinga. According to urbandictionary.com, chingar is a Mexican Spanish word that is the equivalent of the English f word.
Another word I presume is derived from chingar which is used often in Chabacano is 'chingona'. It is used towards a female and means whatever it is you think it means. It is sometimes used affectionately among female friends though. When you hear a girl saying chingona vos to another girl, it doesn't necessarily mean that they're quarreling.
Another bad word in Chabacano is coño de vos nana (mother). Most Chabacano speakers though would not pronounce the de and s in vos and would say conyobohnana. Now this is something you say to someone you're very angry with.
Other adjectives which has a bad meaning in Chabacano are:
-de mal herencia