Its face spazzes out and then it levitates a PlayStation 3. This led to the PS3's long-standing reputation for being more easily possessed by ghosts than other consoles, which crippled its sales for many years.
The Audience Representative Is the Stupidest Person Alive
Many commercials try to include a character that represents you, the viewer. They usually try to make this person somewhat intelligent and likable, because it's you, the person they're trying to talk into buying their stuff. This character usually ends up using their product and enjoying it, and if they did a good job painting that character as someone you could be, you will go, "That's me! I can see myself using that product and enjoying it!"
So I'm not sure what these McDonald's commercials are trying to do. They're pointing out how smart you, the customer, will be for saving money on the dollar menu, yet they're comparing this level of intelligence to spending 10 seconds of awkward silence figuring out a pet name for your girlfriend and finally coming up with "sweet-tea" and then "sweetie".