exciting and slightly shocking
Merriam-Webster Online Dictionary
racy (adjective)1.
a) full of zest or vigor
b) having a strongly marked quality - piquant a racy flavor
c) - risqué suggestive racy jokes
2.
having the distinctive quality of something in its original or most characteristic form pungent
having a body or shape that is suited for racing - a racy dog a car with racy lines