The correct spelling of the phrase "hast goose bumps" is actually "has goosebumps." The word "has" is spelled with an "s" at the end, not a "t." The phrase means that someone currently has raised bumps on their skin due to being cold or scared. In IPA phonetic transcription, "has goosebumps" would be pronounced as /hæz ˈɡus.bʌmps/. It is important to spell words correctly in order to effectively communicate and avoid confusion.