Strike After Feeding

[DeviledDiablo]

Hello everyone.. well ive just recently been having this problem of my snake snapping at me after feeding. He never use to do this, up until 2-3 weeks ago.. hes not usually the biting type. but he struck at me for the first time (sucessfully biting me) after his meal. i was picking him back up after he finished gettin the rat down to his "belly" (as usual) and this past thursday i told my friend to put my snake back after he eats for me (because i was goin to go to sleep) and he said that he struck at him twice.. i was just wonder what could cause him to strike like that all of a sudden... is it cause hes still hungry? my snake is a 2 yr old boa about 5 feet in length and i feed him about once ever 7-10 days. the rat that i give him is about the size of his body. any ideas/solutions? thanks for ur time