A sidelong glance.
A sidelong remark.
He cast me a sidelong glance.
She made some sidelong remarks about his manhood.
She stifled a laugh, and he gave her a sidelong glance.
"The whole world saw that go down," Damian said with a sidelong look at him.
He gave her a sidelong glance.
Evelyn gave her a sidelong look.
Pierre gave him a sidelong look at his butchered French, and Sofia smiled despite herself.