It has not been uncommon to see small groups of interestingly costumed students roaming the halls with computers. These students are working on a Spanish project where they wrote a short dialogue between two or three strangers (e.g. How are you? What do you like to do?). The goal is to build students' comfort in speaking Spanish and in using conversational vocabulary. Once the dialogue is written, students act it out and create a short video.
I'm not sure where you might meet "strangers" dressed in this way, but the group below was certainly having some fun with the language...