Honey beat me to mentioning the Nasty Canasta car alarm - although the absolute joy of this is that she does totally straight, as if she has no idea how funny it is and this often makes a joke even more brilliant, if she'd hammed it up (probably as I would if I'd ever had such a genius idea) it wouldn't have worked so well.
Here's the Trixie Little and Evil Hate Monkey one Claudia mentioned:
(you'll have to sign into youtube to view it as it's been identified as one for over 18s only....though I've seen far worse, it's not that naughty). It's so beautifully and effortlessly executed.
If you haven't checked out some of Anna Fur Laxis's routines yet she is fantastic at a sort of cheesecake seductive....it's sexy and funny at the same time - check out her Everything Stops For Tease and
in particular...............though if you want to see moving from seductive to silly at high speed, you have to watch
....proof it can be done.