An adjective relating to taking delight in an inappropriate sexual relationship or action between the user of the word and a taboo subject. Most typically used for violations of statutory age limits on romantic relationships, it can also be used toward fetishistic objects (sex dolls/toys, fictional characters, inanimate objects of random passion) or other anathema (beastiality, incest, etc.).
The 25 year old looked to the 15 year old he had just manipulated into riding in his 'pedovan' and found the situation pervect.
The lonely anime nerd and his Haruhi pillow/sex-doll were the pervect couple.