I don't know (but they actually DO know) MBTI Personality Type
Personality
What personality type is I don't know (but they actually DO know)? I don't know (but they actually DO know) is an ISTP personality type in MBTI, 9w1 - sp/so - in Enneagram, in Big 5, in Socionics.
ISTP when they know something and are too lazy to explain
Biography
People like this say "I don't know" or other vague answers either to not share their opinions or leave the conversation quicker, or maybe something else.