Slaphappy Sleuths is a 1950 short subject directed by Jules White starring American slapstick comedy team The Three Stooges (Moe Howard, Larry Fine and Shemp Howard). It is the 127th entry in the series released by Columbia Pictures starring the comedians, who appeared in 190 shorts for the studio between 1934 and 1959.

Plot

The Stooges serve as investigators representing the Onion Oil company, tasked with resolving a series of robberies plaguing the company's service stations. Despite their diligent efforts to provide exemplary customer service, offering unconventional amenities such as shaves, manicures, cologne, and popcorn, the Stooges fall victim to theft while momentarily distracted. Following a trail of motor oil, they ultimately locate the hideout of the perpetrators, where they display unexpectedly proficient boxing prowess, surpassing their earlier detective endeavors.