The discussion revolves around a logic puzzle involving nine doobies, one of which contains hash, making it heavier than the others. The challenge is to identify the heavier doobie using a balance beam scale with only two weighings. The proposed method involves grouping the doobies into sets and comparing their weights in a systematic way. If the first group (1, 2, 3) is the heaviest, further comparisons within that group will identify the heaviest doobie. If the first group is the lightest, the next group (4, 5, 6) is weighed, and similar logic applies. If the first two groups balance, the last group (7, 8, 9) is weighed to find the heavier doobie. The conversation also touches on other mathematical puzzles and includes a light-hearted exchange about the difficulty of math, with one participant expressing frustration over their mathematical abilities.