Because that's what Corollax named it.
He called it that because once you laid the first bomb (of the jump-not the wasted one), you don't touch the ground. So, theoretically, you could bomb jump horizontally without falling.
He called it that because once you laid the first bomb (of the jump-not the wasted one), you don't touch the ground. So, theoretically, you could bomb jump horizontally without falling.