I saw a newspaper that was written in pidgin English. Unbelievable.
The patois in Jamaica is indecipherable, but supposedly English.
The most recent that gets me is people who insist on leaving out the middle syllable of words if they contain a d or t. (Impor-ent, di-ent, etc)
Make an effort.
I remember an article in a 1975 issue of Economic Geology for which the abstract was written in Melanesian pidgin as a joke. The article was about the Panguna porphyry copper deposit in Papua New Guinea.