Aquaplaning 

When a woman gets excited enough that a build up of wetness causes a lack of friction between herself and where she is sitting.

That HBLC is so gorgeous, when he appeared on TV last night, the aquaplaning caused me to slip right off my leather sofa.

Aquaplaning by Harold Bishop's Love Child September 25, 2010

aquaplaning 

you're having sex and you've shot your load earlier than you'd hoped so you carry on pumping as long as you can before you lose rigidity

you're shagging kelly brook and you inevitably spaffed inside of her in the first 20 seconds, so you continue aquaplaning for as long as you can as to not seem like a complete loser...

aquaplaning by sams the man August 28, 2010