Nisflip

Nisflips are when a TASer makes Mario [dive] on the first frame of a [sideflip]. This is almost always not ideal except in case of very short distances, if you would lose your 32+ speed within travelling less than 1246.9 units after initiating the sideflip.

After a sideflip, it is best to wait until Mario reaches just below 32 speed before initiating a dive. This is because acceleration decreases if Mario passes 32 speed, so the +15 speed gain from the dive is more useful at 32 speed to reach 47 speed, rather than, for example, to go from 8 speed to 23 speed.