Then his left leg collapsed under him and he crumpled to the floor.

His legs collapsed under him and he fell in a pile at my feet.

Suddenly its front legs collapsed, and it went down in a tangle.

His legs nearly collapsed as a wave of nausea hit him.

The legs on one side of the table buckled and almost collapsed.

Sammy's legs collapsed under him at the impact of her words.

While mom got lunch one day, at home alone, her leg collapsed.

A sense of loss rushed through him so overwhelming Data thought his legs would collapse.

She took three steps forward, ignoring the boy completely, and then her legs collapsed.