Is this a good way to finish a PhD current status conference? First of all sorry if I commit any mistake in this question, I read all the instructions but it´s my first one on this useful site:

I am finishing some diapositives for a PhD current status conference, and I thought about these image as the last one:



                                     **Thank you and...** 






I know it is a good technique to end a conference by saying something intelligent, funny or nice in order to give the audience one last "good feeling" so a good impression is left, but I don´t want it to be seen as immature.

Thanks in advance to everyone.
A problem with that kind of ending is that the last slide tends to be shown the longest, because of the upcoming questions section, and it's somewhat distracting to ask with a funny picture behind. Something an instructor told me long time ago, for any slightly formal presentation, is to just show the first slide again (the title slide), so that you can answer questions with just the title of the talk behind you, avoiding distraction.