From "The Real Ghostbusters: The Spirit of Aunt Lois (#2.41)"
[Peter's aiming his particle thrower at Slimer, who has taken cover behind Janine
] Dr. Venkman, don't you dare! There's nothing in my job description about target practice!
Dr. Egon Spengler
] Peter, stop! This is irrational!
Dr. Peter Venkman
No, Egon, finding the refrigerator empty is irrational. Slime in my shoes is irrational. This will be fun.