Steven

A rationalussy (3rd syllable stressed) is the opposite of a fallacy. Examples: affirming the antecedent, appeal to logical validity, post hoc ergo post hoc, ad evidentiam. "My argument was no strawman fallacy, but a fleshman rationalussy."

Martin Randall

Related to losing money by trying to be more rational

Isaac King

A derogatory term for people who use their rationality as an excuse for cowardliness. "Dude, if we defect in this prisoner's dilemma we'll make millions. I guess you're just a sad little rationalussy."

cat from /dev/null

Sex with a rationalist who is being penetrated, compare with "bussy" and "pussy". In context: "Got some neat reationalussy at the party last night"

Sinclair Chen

Resolves to my best judgment as heavily influenced by comments and bets on this market.