I think there is something to be said about one’s ability to let a little playfulness at the cake exchange roll off their back so to speak. If you can remain jovial after all of the stresses of the day and deal with it in a playful manner, a lot can be gleaned from that as well.
It doesn’t have to be outright smashing of the cake into your partners face, but a little playfulness well received can show comfort and trust with your partner also.
Gentle playfulness is a sign of an abiding affection.