The phrase "boot on grind" has a few variations in spelling, depending on the context and intended meaning. "Boot" can be spelled as "but" (IPA: bʌt) or "butt" (IPA: bʌt), while "grind" can be spelled as "grine" (IPA: graɪn) or "grind" (IPA: graɪnd). The pronunciation of the phrase can also vary depending on the speaker's accent and inflection. Overall, the spelling of "boot on grind" is flexible and can be adjusted to fit the situation.