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.
Kelly: There he goes again. Richard is SO sexy!!
Nadia: OMG, no he's not!
Kelly: Yes he is!
Nadia: You seriously have bad taste in guys.
An idiom used to express feelings of regret and remorse, stemming from a realisation that one has willingly participated in behaviour that has led to an unforeseen and morally reprehensible outcome. The idiomatic use of eating serves to convey both the initial positive, tasteful, experience, as well as the negative, distasteful, after-effects.
Clearing the rain forest is how I make my money, but seeing locals driven from their homes has left a bad taste in my mouth.
one of the best cult horror/splatter movies ever. the first film directed by peter jackson, it has heaping amounts of low-budget gore and blood and is actually quite funny if you like off-beat humor.
we watched bad taste last night, and laughed at all the bad effects. HAHAHA!