This isn't inappropiate, trust me.
Basically, think of a song title, then add "in my pants" to the end of it.
It leads to some epic lulz.
Eg: What I've Done in my pants. XD
(This is quite immature, but I'm easily amused. )
Kids... in my pants
Walk this Way... in my pants
Hmmm, well it's at least better than I thought it'd be when I saw the thread title... :/