Here are the possible solutions for they might have kids with names that end in iii clue
Answer
Clue
Relevancy
jrs
Clue
They might have kids with names that end in III
sons
Clue
They may have "II" or "III" after their names
grandads
Clue
Their kids have kids
Definition
GRANDAD, a grandfather, also GRANDDAD
grandmas
Clue
Their kids have kids
Definition
GRANDMA, a grandmother
ews
Clue
Sounds you might make when I say "Would you rather watch your parents have sex or have your parents watch you have sex?"
rrs
Clue
They have end-to-end cars: Abbr.
petition
Clue
It might have many names
Definition
to make a formal request
newt
Clue
Gingrich who said "females have biological problems staying in a ditch for thirty days because they get infections and they don't have upper body strength"
Definition
a tailed amphibian of the salamander family, also EWT