Suicide Squad Comic-Con First Look:
https://www.youtube.com/watch?v=PLLQK9la6Go

The Song originally belongs to The Bee Gees group which released it in 1968.

This version belongs to the singer Susie and it's NOT the same as the one in the trailer as they remixed it with the movie's music but this is the same song and singer, for me that was enough.

Lyrics:
I started a joke, which started the whole world crying,
but I didn't see that the joke was on me.

I started to cry, which started the whole world laughing,
oh, if I'd only seen that the joke was on me.

I looked at the skies, running my hands over my eyes,
and I fell out of bed, hurting my head from things that I'd said.

Til I finally died, which started the whole world living,
oh, if I'd only seen that the joke was on me.

I looked at the skies, running my hands over my eyes,
and I fell out of bed, hurting my head from things that I'd said.

'Til I finally died, which started the whole world living,
oh, if I'd only seen that the joke was on me.

Suicide Squad Trailer Song - I Started A Joke (Susie)

Mohamed AbdAllah