Get (one's) arms around (something) spoken language verb phrase
Used to indicate comprehending something difficult or confusing.
Do you find it hard to get your arms around this issue?
To a newbie like me, getting my arms around these technical terms is really hard.
It will be difficult to get your arms around this chapter at first. But it will be fine.
It will take you a while to get your arms around these questions.
It's mostly used in the present tense.
To say, or believe something or someone that seems completely crazy, delusional, or stupid
You spent 1000$ on a new pair of shoes! It is insanely crazy. You need your head examined.