Depends what you mean by "aggressive" I suppose! I mean, are we talking full on S&M, or just a little bit of rough and tumble?

Personally, I like the latter option, you know, nails down the back, fingers in the hair and a bit of a tug - even just initiating the whole thing with a bit of blunt talk can up the "aggressiveness" example; "You, pants off, now!" (lol!)

Hope that's a good start!

M_V x