[EuroPython] Language Advice for Speakers?

[Jack diederich]

Does anyone have good links or tips for language?  The rule for
speakers in general, even when presenting to native speakers, is to
keep it simple.  How much further should I take "keep it simple" for
the EuroPython audience?

The US PyCon has many English as a second language (ESL) speakers but
they are all very fluent. It is a self-selecting group that goes to
the US, after all.  How much of that can I assume for EuroPython?

Maybe a concrete example would help.  In my PyCon talk a couple years
ago the biggest laugh-line was a slide titled "Oh The Huge Manatee."
I'm guessing that is out of bounds.

-Jack

PS, I've listened to 20 hours of "Teach yourself Lithuanian" CDs.  Not
too bad (because it is latinate), and much easier than my last attempt
(Icelandic).