To splinch requires an online game or similar, controlled by keyboard, that uses characters that move using the arrow keys, or W,A,S,D, etc. Splinching is where the on-screen character is made to use both animations of two of the keys you press, at the same time, by pressing them simultaneously. this results in the character trying to move in both directions at once, causing a humerous animation.
Splinching can also be performed by use of a glitch. A user can cause the game to send the character into splinching by performing an illegal move.
Present: Splinching. Past: Splinched.
Person 2. "OH NOES!! U made me splinch nows!"