I cannot decipher this “Rhymes with Orange” strip at all:
I was clever enough to look up what a “Ted Talk” is supposed to be, but that doesn’t really help much. Did she don the headset before going to bed, or did she manage to put it on while sleeping? Or, perhaps her partner put it on her head, so that she wouldn’t lose the resulting somniloquy?
Comics I Don't Understand 
Congratulations on having made it all this way before being exposed to Ted talks! Alas, you’ll never be so innocent again.
In any event, she either had the headset on and forgot to take it off before bed, or put it on during some disordered midnight sleepdressing. Which way doesn’t really matter to the joke.
TED Talk. It’s an acronym. @Downpuppy is correct about the joke.
Notice the lettering in red at the bottom of the title panel (“throwaway panel”). There seems to be some kind of competition or substitution going on between the T and the B; or thus between TED and BED.
I don’t know if your lookup gave you this info, but TED Talk speakers invariably use a wireless headset for sound pickup. (And forgive my surprise : you really never ran into the whole TED Talk culture??)
@ Dana (4) – That’s just another one of the priceless advantages of living six time zones (and one ocean) away from the continental U.S.; it provides superb insulation against the nonsense.
@ Kilby (5) – You’re missing out. TED talks are about technology and culture, and are international. I’ve learned some of the most interesting things from them. The format is that the talk takes a maximum of 18 minutes.
TED talks are online, including many on YouTube. I don’t see how physical distance from the originator could matter.
I’m with Brian. The first time I heard of them was when I was living in China.
@ Kilby (5) – I’m sure you have your own nonsense, wherever you are.
@ L.F. (9) – Of course. But especially on D-Day it seems inappropriate to discuss the sickest excesses that once occurred in Germany. Luckily, that is all history now, unlike in some other places on the planet.
I forgot June 6 was D-Day. Are you in Germany or France? Whichever, greetings from Texas!
The clue is that she’s wearing a headset.
@ L.F. (11) – I’m just southeast of Berlin. The 80th anniversary was major news here, with all sorts of documentaries.
P.S. The location proved fortuitous when CIDU Bill (and Robin) decided to visit the city for a few days back in 2017.
@ Kilby (13) – Cool. My wife and I spent a week in Düsseldorf 2 months ago. It was our first visit to Germany. We had a great time.
@ L.F. (14) – I’m sure that you had a good, perfectly logical reason to pick Dusseldorf, but it sure isn’t an obvious choice (I have been there several times, but only in “transit” at the airport, which is a semi-major hub for Lufthansa).
Then again, every time I meet Germans who tell me that they have been (or will be) travelling to America, they almost always name some godforsaken out-of-the-way spot, which I would never ever have recommended to anyone as a “tourist” destination. When asked, the reason they give is almost always “relatives that live there”, or occasionally “college”.
@ Kilby (15) – Same situation here. We have a friend in Düsseldorf.
@ L.F. (16) – I looked it up just to confirm whether the ümläüt was correct (it is indeed), and discovered that Düsseldorf is about as far west as you can get and still be in Germany (just 50km from the Netherlands border). If your friend ever happens to take you on a tour to Berlin, let me know. 🙂
@ Kilby (17) – Hey, I did my umlaut research! We Spent several days in Amsterdam and took a train to Düsseldorf. Next time We’re in Berlin, I’ll definitely let you know!