Oh boy could we extend this list some.

http://savethegame.org/wiki/List_of_mental_triggers_that_make_people_lose_The_Game

Off the top of our heads (Helen is here):

denari snapping his fingers.
The word 'flange'.
Sending foreign language text messages to squiddity.
Anyone asking squiddity what the time is.
hythloday saying anything that doesn't immediately make sense.
The concept of being reminded about something by something else.
Something that has no connection to anything else.
Earworms.
Breasts.
Spankings.

And so on.

PS: You just lost The Game.