The feeling of deep love and affection someone has for you that the person would give up forever just to touch you (based off the song iris by the goo goo dolls)
Boy: hey girl, you're my iris
Girl: awww youd give up forever just for me?
Boy: yea
Means you feel so deeply for a person that they have become a part of you. You feel them through every part of you. Wether they're actually with you at that very moment or not. Think head over heels nd TRULY being IN love with someone.
Can't get you outta my head. Day or night, near or far. DAYUM you're in my veins.
Similar to the phrase 'my balls', it is the longer, more informative version for those idiots who haven't ever heard the phrase.
Used many times by Eric Cartman in the show South Park