gas ass ass has its gas
(are a couple of examples put together into an amusing sentence)
Three letter words ending in -s are:YesBusAdsCosHasHisInsSisSosWas
mandates
what 5 letter word begins with s- a living thing-second 5 letter word ending in d
Bellybuttons would be the longest word I can think of beginning with a 'b' and ending in an 's'.
categories
as, is, us
Bugs
Visa
acrobaticsaerobaticsschematicskinematicspragmaticsasthmatics
runners
dauntless
actions