This poker term doesn’t necessarily mean what you think it might. It’s not wanting to spew because something gross happened that makes you want to puke all over the monitor when you’re playing poker online. When a player uses this term they’re basically referring to a poor decision that was made in a hand.
In other words, they think a player is spewing chips and generally just trying to fight for every pot, which usually doesn’t end well. When a player is tilting it tends to make them spew more cause they’re not playing their A-game. Another online poker term that means the same thing is “spewy”.
EXAMPLE “When I am tilting I just become a spewtard and donk off all my chips.”