k (11th letter) ↔ p (16th) — let's check systematically? Might be tedious manually.

Could be a keyboard shift (each letter typed with hands shifted one key on QWERTY)? Example: k → i (shift left), but then l → k, m → n, a → s, t → r → "iknsr" not obvious.

klmat → jklzs? no (k→j, l→k, m→l, a→z, t→s) → jklzs — not obvious.

But "yada yada" is a phrase (aday aday reversed), "mads" is a word, "yabw" reversed is "wbay" — maybe "WBAY" is a TV station? Then "klmat" reversed = "tamlk" — possibly an anagram of "talking"?

Given the time, the most likely simple explanation is but with possible misspelling or anagram. "klmat" might be "talking" without the 'in'? No. Actually, "klmat" reversed "tamlk" — if you add 'i' and 'g' → "talking"? No.

"klmat" — maybe "format" with each letter shifted? k→f (-5), l→o (+3), not consistent.

Given the playful nature, I'll guess it's a after removing hyphens: klmataghnyhsdamyabwaday reversed = yadawbaymadsyhnyghatamlk — no.