Do your friends ever ask for your breast tissue??

I have many cishet male friends who are very open and accepting of me, and if they have any questions about being trans/lgbtq i tell them they can come to me. But ive now had 3 different friends who dont know each other ask if they can have my breast tissue after top surgery? Is that a normal question to be asked?? Theyre like "you have nice ones wanna give them to me?" When i talk about getting top surgery and im not surr how to express my discomfort with that question without revoking my openess to questions regarding myself and transitioning