There were many but 4 spring to mind at the moment
The time my Xeno was chasing a morph thinking it was a fish (he had only seen pictures of fish since he had never landed on a planet in his life) to feed it to his 11 brothers and sisters, and at some point the morph projected images of the Xeno's wife and firstborn child into his mind, and my xeno said "what's ma cousin doin with dat ugly kid?" and we couldnt stop laughing.
The time a LABC accidentally killed a hegemon that he was trying to protect from my Sabre.
The time 3 order players and me made a grand tour through minor, delta, iota, 99, 90,alpha, t37,t23,t29,baffin, coronado, cortez, california, pennsylvania, texas, New YOrk, Alaska, and back to minor with probably around 5 nomads, 10 outcasts, and 10 ln/lpi/lsf chasing us after we killed 3 keepers.
The time I was RPing 4 different people on my Kusari train, the female coms officer, the weapons officer (her boyfriend), the oppressive first officer who hated her, and the 70 year old captain who was always sleeping (her father but that was a secret). There were 2 outcasts who wanted to free the coms officer from the clutches of the evil first officer, and who were trying to tell the captain about how bad he treats her when he is sleeping, and one outcast player got so immerged that he pmed me in oorp telling me (identifying me with the captain) about how bad my first officer treats my coms officer behind my back.