Concept: Sej is wearing a riot bikini typical to what women wear when having a Carwash. Instead of a flailed mace she is wielding a squeegee. Bristle is now a hextech car in the shape of boar.
Q: Sej races to targetted location creating a trail of suds and a splash on completion/impact.
E: Sej uses her hose to spray water around herself dealing damage over time.
W: Not sure about the animation but I would like her to put buckets on the heads of "frosted" enemies, slowing them in the process
R: Sej hurls a huge soapy sponge at targetted location exploding on impact encasing nearby targets in soapy water.
If anyone could draw a picture that would be great
EDIT: her joke could be "Oops! I dropped my sponge... Guess I'll have to use these"
EDIT2: 60+ upvotes! Thanks guys