For me exhibitionism looks like sharing partial or full nude content on the internet, whether it's on social media, on kink or fetish sites such as FL, or on sites such as this one. I also recently started occasionally camming and that sufficiently fulfills my desires to engage in slutty acts with strangers on the internet.
Exhibitionism in-person includes going to kinky clubs or parties and playing amidst small or large groups of people. My personal favorite is being restrained and spanked, flogged, etc.
in front of lots of people. And at the top of my 2016 bucket list is being a participant in a gangbang with lots of onlookers!