For the uninitiated, these are generally regarded as their best films:
PEACH-O-RENO (1931) - available via WA (in his book, Watz lists this film with a handful of other 30s comedies which transcend the genre of funny pictures peopled by clowns... ITS A GIFT, HORSE FEATHERS, WAY OUT WEST among the others.)
HOLD EM JAIL (1932) - available via WA (in his book, Watz compares the finale of HOLD EM JAIL to THREE LITTLE PIGSKINS as both finales have a "procession of crazy jokes that do not necessarily build to a powerhouse conclusion.")
DIPLOMANIACS (1933) - available via WA
HIPS HIPS HOORAY (1934) - available via WA
COCKEYED CAVALIERS (1934) - not yet available via WA
All those are pre-code. The code took a big bite out of their comedy and, according to Watz, the pair had to "completely overhaul" their approach. Neither Wheeler or Woolsey were happy about it with Woolsey griping "they are tougher on us than they are on the fascist newspapers in Spain."
They were probably the raciest of the comedy teams back then. The last couple films, especially HIGH FLYERS (1937), were also hampered by Woolsey's illness (he died in 1938). THE NITWITS (1935), a comedy-mystery with an 18 year old Betty Grable, is generally regarded as their best code-era film.
Racy scene from HIPS... this kind of stuff would be off limits later that year.