Having bad taste means that you like something that MOST (not all) people don't like.
This could be referring to your taste in girls/guys and who you think is attractive.
Synonyms for bad taste
On this page, you will find 30 slang terms related to bad taste. Some of the top words include: Armpit Sucker, rancid, shabby, taste like ass, fonky, and 25 more.