Joey? (4,6)
'joey?' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for baby boomer that I've seen before include "Joey" , "one arriving in a crowd" , "One of many born after WW2" , "born just after the war?" , "Person born shortly after WWII" .)
(Other definitions for pal that I've seen before include "China" , "Bud" , "Friend (colloq.)" , "Close friend" , "Mate, informal friend" .)