What was ironic about tucks statement regarding the toad durn fool thing must think its going to live forever?

The irony in Tuck's statement about the toad, suggesting it thinks it will live forever, lies in the contrast between the toad's natural life cycle and the Tuck family's immortal existence. While the toad is part of the normal cycle of life, Tuck and his family are cursed with eternal life, unable to participate in the natural progression of aging and death. This highlights a profound disconnect; the toad's belief in its long life is naive, while the Tucks grApple with the burdens of immortality. Thus, Tuck's remark underscores the unintended consequences of their eternal existence.