Out of context that nickname doesn't seem that bad. In context, it's very embarrassing.
Poor Howard! He gets some of the worst nicknames. He was an astronaut called Froot Loops! And, now he has to live with Clogzilla at least for a few weeks. Sheldon was right, that's not gonna pass.
That moment when Emily realized how she knew Howard was awkward. The experience at Emily's was probably one of the biggest humiliations of his life. Well, at least, the biggest that didn't involve his mother. I'm sure he has plenty of those. Emily will be a constant reminder of that night.
Despite that, I hope she sticks around. The Raj in this episode was much more self-assured and fun to see.
Despite Howard and Emily's past, it doesn't look like it will affect her relationship with Raj. That's a good thing, since things with Lucy ended. Emily's quirky, but in a good way. She'll fit in nicely with Penny, Bernadette and Amy too. I hope we see her interact with them soon. Just in case she decides to go somewhere....
If you like toilet humor, then The Big Bang Theory Season 7 Episode 20 was your episode. I found them quite humorous, especially the ones that on the surface weren't even related. For example, "They could've filled the bowl a little more." It was funny, but also made me feel a bit bad for Howard.
The other main storyline involved Sheldon's decision to pursue a new field of study. Even though Penny had no idea what he was doing with string theory, her comparison of his field of study to a relationship was an apt one. And, it lead Sheldon to Cosmo for advice. No, not the FOX television space show, Cosmos, but the women's magazine.
He tried a new hair style, but he looked like "sex on a stick," according to Amy so that wouldn't work. The funniest moments came from Sheldon pulling out pop culture references. Maybe he spent too much time reading Cosmo! The Geology book may have been a better option.
Penny: Wait. What's wrong with geology?
Sheldon: Let me put this in a way you'll understand, Penny. You remember how you explained to me that the Kardashians aren't real celebrities? Well, geology is the Kardashians of science.
Amy: Maybe you could make your new field of study the calculation
of nuclear matrix elements.
Sheldon: Oh, please. If I wanted to take up a fad, I'd get a tramp stamp.
A drunk Sheldon called Stephen Hawking on the phone and left many embarrassing messages. At least he ended strong with, "Hey, did you see the LEGO movie?" Though, he's now known as a jackass by Hawking!
Who should be more embarrassed?