An easy way to avoid cumming too quickly is to buy benzocaine. DON'T use orajel or anbesol or anything like that for mouth sores; there's a kind you can specifically get for your penis at sex shops, spencer's gift shops, etc. BENZOCAINE is a local anesthetic that will numb any sensitive area you apply it too...don't worry though, it only lasts about 5 minutes or maybe less...but trust, it WILL buy you some time while you're in her...don't use it while she's giving you head, though; her mouth will go numb and she may drool! Apply the benzocaine directly to the head of your penis (like lubricant) and THEN PUT A CONDOM OVER IT...you don't want the benzocaine to touch your girl's sensitive parts, it numbs them too! Good luck....