A couple of weeks ago.
As DAT and VEX merged into Brussels Airlines we were woundering wat de new callsign would be. Their new livery has a big B in dots on the tail. And DAT is now known as S-tail (big S on their tail).
Anyway I asked an S-tail pilot if I had to call him B-tail from now on forward. He liked it a continued calling himself B-tail123. His colleague still went on with S-tail as he didn't have the new livery yet. A third S-tail pilot followed all before and called in with SMARTIES456.
Must say chearful pilots.