A cutie booty is someone that you love hella and makes you feel all warm and soft, makes u go cutie mood. You just look at them and start getting all "oooh my lil cutie boooootyyyy"
*babe sits and does nothing*
Me: "omfg how can u be so adorable, I wanna give u kisses and squuuueeeze you, my lil cutie booty"