To my knowledge, there is no suicide move in SS5...I may be wrong. yes, there is it. I was playing the game on neorageX and the move works, but not on WinKawaks, which is totally odd.
For those of you using Kawak 1.46 to play SS5, I wonder did you guys have problem doing the suicide move(b,f,d+start)? I can do the taunt, but not suicide, which is very odd