You're not exactly up for the Humanitarian of the Year award, so save your altruism for someone who can't see through you like cellophane.
The quote highlights a character's lack of sincerity, suggesting that their apparent generosity is merely a facade. The speaker implies that the person addressed is not genuinely altruistic and is transparent in their ulterior motives. This statement serves as a critique of superficial kindness, emphasizing the importance of authenticity in altruistic actions.
In the context of Rebecca McNutt's "Mandy and Alecto: The Collected Smog City Book Series," this line reflects broader themes of deception and human nature. It points to the struggle between true compassion and performative acts of goodwill, challenging the reader to consider what genuine empathy looks like in a world filled with pretense.