First you get in the mood by watching porn or some thing like that. Then (for vagina) mosen your finger and stick them in your wet pussy or if you have a sex toy stick it in there. (for anal) mosen your fingers or toy *prefer loation* and stick it in there hurts at first but starts feeling good.
If Your a woman you stick a penis sized object up your vajina ex:dildo,hotdog. and if your a man you simulate a vajina shaped object and pull it up and down your penis
take a slice of bacon in one hand and some anti-bacterial in the other and think of some thing dirty