Help finding the name of a song.?

I never listen to the radio at all and I do not keep up with modern
popular culture, so this may seem like somewhat of a stupid/obvious
question.

I was out and about today and there was a variety cover band playing
publicly. I was walking around with my friend when they started
playing a song I had heard maybe once or twice around but never knew
the name.

The song was kind of an upbeat tune and the part of the lyrics I
remember go like "something something in my pocket". I asked my friend
what the name of the singer was and she couldn't conclusively remember
it, but she said she liked the video and that it included a male child
singing the song to his child girlfriend (I don't know exactly how
accurate all this information is, but it's all I have to work with).

Seeing as I don't really know anything about the song, trying to find
it on Google has been very difficult. Like I stated in the beginning,
I probably sound like a total idiot asking about this, but like I said
I don't really keep up with things of this nature so I thank you for
the help. I also apologise for the lack of detailed information.
It is a relatively new song and it is sung by a male singer.