Just think of having a mutation with a long tail and always having your tail intertwined with Kurt’s and when you kiss your tails make a heart
If you and Kurt both wrap your tails about each other while cuddling. its bound to happen that sometimes one of you will forget and when you try to get up you both end up falling off the couch/bed
On more than one occasion when your tail is intertwined with Kurt’s while walking together, one of you will forget it and be pulled back when you go to walk away. (That and a few times Peter’s tied your tails together when you weren’t looking.)(He denies all accusations though
Toad's Cave 