User blog comment:Miskos3/Fairy Tail Episode 237: Tartaros arc Prologue: Natsu vs. Jackal, Review/@comment-7418318-20150613184724/@comment-5303512-20150614030911

There is two ways I see it.

1. Like what Nick said above, Happy found enough time to throw Jackal away and used Mach speed to fly away fast enough, like with Lyon and Racer but he used a Ice shield.

Or

2. Happy inherited Bobobo's Afro and absorbed the explosion like a classic troll! LOL