I'm looking for a specific fic wherein the team (Tony, Thor, Steve, etc.) are (casually?) discussing Mjölnir. At some point, someone suggests pinning Tony down with Thor's hammer, and Tony's like, "that's probably a bad idea" and Steve responds with "why, afraid of being pinned down?" (something along those lines) and Tony, Bruce, and Nat just start listing how the hammer would kill him should it be placed on the reactor. Steve interrupts, grief/guilt-stricken, apologizes, and that's where my memory of the fic ends.
I'm not sure if this is enough for anyone to work with, but it certainly wasn't enough for </i>me</i> to work with, but if anyone remembers this, please link. Thank you!