Boruto always showed little skill as a shinobi, yet he always showed off his great talent with Sarada and Sakura who always knew that he had no value as a shinobi but his constant bragging already had her angry
Sakura: You are nothing but a talentless brat, you shouldn't believe yourself too much
Boruto: Please I could kick your ass if I wanted to
Sakura: oh really? If you're so sure why don't we bet? That you can't give me a single hit
Boruto: haha sure, when I win you will have to kneel before me in front of the village and admit that I am a better ninja than you
Sakura: good and when I win you will have to give up being a ninja and you will become my slave
Boruto: good
Boruto didn't hit a single punch while Sakura used it as a punching bag.
Sakura: well boruto ready for your punishment from now on you are no longer a ninja, you will be my slave
Boruto: ... Yes Sakura
Sakura: now lick my feet
Boruto: * lick * gh it taste awful
Sakura: yes yes I've been in my sandals for a week
Boruto licked her feet perfectly clean
Sakura: well good work, you are not completely useless after all, you are a skilled feet licker
Boruto: ...
Sakura: well you will be my foot slave from now on