I've searched all of the puckleberry fanfics and I couldn't find one of my favourite ones that I had read a while back. It was AU one shots based on puckleberry with pezberry friendships. One of the one shots was with Rachel/Puck being teachers at Mckinley with Rachel being the math teacher and Puck being the coach. There was also one with puckleberry being married with kids where their kids friends hit on Rachel.