Maybe Methuselah cracked almond (3,3)
I believe the answer is:
old man
'maybe methuselah' is the definition.
I can't tell whether this defines the answer.
'cracked almond' is the wordplay.
'cracked' indicates anagramming the letters.
'almond' is an anagram of 'OLD MAN'.
Can you help me to learn more?
(Other definitions for old man that I've seen before include "Informal name for father, husband or ship's captain" , "Husband (inf)" , "Husband - father - boss" , "Aged male as informal father" , "Elderly chap" .)