I decided to copy this out of the comment since it wasn't formatted very nicely there.
It's a play on words. It basically means "When people eat these hot dogs they are going to be really popular."
In this case, the "like" is being used as a "stammer" or "filler" word that is frequently used by surfers (notice the pattern here? Dude is another word use by surfers). Think of it like "ummmmmm". We can , like, go to the, like, store, and, like, buy some food. It's a bad habit that annoys many native speakers.
The next key thing to understand it is that "dog" is a slang term that is used to refer to a friend. It's used much like "man". For example, "Hey dog, what's up?" == "Hey man, what's up?".
Finally, "hot" can be used as slang when something is really popular For example, "Energy drinks are really hot right now" == "Energy drinks are really popular right now".
So, putting it all together, it says "When people eat this, they're (the hot dogs) going to be like (==ummmm) hot (==really popular) dog (==friend).