FYI, that was his first line in the original TYH. A cheap filler when I had run out of ideas, which introduced Toad the Crazy.
...Now that reminds me of one of the few jokes from that which was actually GOOD! I re-used the main punchline here, with MK thrown in as a twist.
As for the panel with Ruby, this is the trigger for a new plot. She was originally meant to forget about her relationship, but I figure forgetting all about Yoshi could make things even more humorous/dramatic.