a mad ting
A wild outburst when something hits you like a brick to the face, but you're happy about it. Like when your mom says you're gonna get a dog and you're like, 'Yes! I love dogs! Also, I love you!'
'That pizza was a mad ting! It was like heaven in a box!'
'He just said he’s gonna quit his job? That’s a mad ting!'
'When my dog ate my homework, that was a mad ting!'