the lyrics playfully hint at sex without spelling it out (and getting censored). The first line ends with ...ex, so you expect the second line to be about something that she loves that also ends with ..ex. She changes it at the end to "undress" which doesn't rhyme.
Also "touch your head" is a bit of a random expression (not his lips, for instance, which would be more romantic), but it hints at "giving him head."
There are probably more that I missed.
the lyrics playfully hint at sex without spelling it out (and getting censored). The first line ends with ...ex, so you expect the second line to be about something that she loves that also ends with ..ex. She changes it at the end to "undress" which doesn't rhyme.
Also "touch your head" is a bit of a random expression (not his lips, for instance, which would be more romantic), but it hints at "giving him head." There are probably more that I missed.