Ecce Eduardus

Ecce Eduardus Ursus Scolis
Nunc tump Tump Tump
Occupit gradis pulamate
Pust Kristopheus robinus descendens

Roughly translated:

Winnie the Pooh fell down the stairs
And his head went thump thump thump!

Per His Grace Sir Siegfried von Hofflichskeit
Biographical interview
Nov 1996
This was the invocation read before the tournament
At the first SCA event.

Note: the original English text may have been, "Here is Edward Bear, coming downstairs now, bump, bump, bump, on the back of his head, behind Christopher Robin."