The characters of Metal Gear Online each had their own sleep talking phrase. This would occur when players were knocked out by tranquilizer rounds or sleep gas, and they would attempt to use their Codec phrases only to say one thing (or in the case of Snake, two things) each time as their character was still asleep. Naturally, the unique characters one could play as had their own as well. All of them are as follows:
Male A: "...We got a hostile..."
Snake: "Liquid..." and "Makes me too frisky..."
Johnny (Akiba): "Pass me...the TP...please?"
Liquid Ocelot: "It's not over yet..."
Mei Ling: "I...just can't stop..."
Vamp: "Raiden...is so big..."