As a prank jms wrote a phantom
scene where G'Kar like some reptiles changed sex and became female,
then to cement a political relationship G'Kar (with his well known
prediliction for sex with alien species) ended up in bed with Londo.
Peter Jurasik and Andreas Katsulas were not told about the prank
until long after they thought it was real. As revenge they had then
for years threatened to act it out and finally at Wolf 97 they did
in front of the audience.