Uber Bomb Jump
An uber bomb jump (UBJ) is a bomb jump in the '5 bomb' family. The '5 bomb' family of bomb jumps all rely on 'burning' a bomb before beginning the jump, so your bomb counter refills halfway through the jump and enables you to use 2 extra bombs.
Compared to the High Bomb Jump, a UBJ begins the same as an HBJ except the last two bombs are placed in quick secession to simulate a mid-air double bomb jump.
TODO: <video of UBJ>
The video below showcases the optimal A press timing for a UBJ.