Involving two individuals: a boy in contact with a boy (6-2-6)
I believe the answer is:
person-to-person
'involving two individuals a boy in contact with a boy' is the definition.
I can't judge whether this defines the answer.
'involving two individuals a boy in contact with' is the wordplay.
'involving' indicates putting letters inside.
'two individuals' becomes 'topers' (toper is a kind of individual. I am not sure about the 'two' bit.).
'a' becomes 'per' (eg 'one a day' means 'one per day').
'boy' becomes 'son' (synonyms).
'in contact with' becomes 'on' (I've seen this in other clues).
'per'+'son'+'on'='personon'
'topers' inserted within 'personon' is 'PERSON-TO-PERSON'.
Can you help me to learn more?
(Other definitions for person-to-person that I've seen before include "Involving meeting or contact" , "Involving one-on-one contact" .)