An alphabetistic acronym (pronounced as letters not one words) short for
Mulder/Scully Romance. Used by
X-Philes (fans of the show The X-Files) do referance a relationship between the two main characters of the of the show. For the first six or seven series the term was used mainly in fanfiction, fan music videos, and discussions online, as the relationship on the show was displayed as mostly platonic or non-sexual, but in the later series it could be applied to the actual relationship on the show, as well.
Cf.
DRR, shipper,
noromo.
1. I wrote a new
X-Files fanfic today, it's heavy on the MSR.
2. If
Mulder and
Scully get it together it'll ruin the show- say no to MSR!
3. The MSR is an ideal example of a friendship destined for more.