custard arm 

When someone is bad at throwing a ball in sports.

"Nice throw, custard arm."

"What is Jono doing, he's got the biggest custard arm ever."

custard arm by Jono P. November 26, 2005

good arm, custard 

What you say shout when someone fails to catch an item you throw to them, like keys, balls, a small bag etc.

The arm equivalent of 'Spaghetti Legs'; someone with ‘Custard Arms'.

Person 1: ‘Go Long!’ *throws item*
Person 2: *catches, and tries to hold onto it before dropping it.*
Person 1: ‘Good arm, Custard!’

good arm, custard by Lanky J March 15, 2024

Custard Arms 

Having fat arms, the fat usually hangs from the arm - the same as lunch lady arms

Man, check out that fat piece of shits custard arms

Custard Arms by pezzzzzz October 21, 2009