Be under the cosh British phrase
To face with a stressful situation; deal with difficulty and unwanted challenges; be under pressure
The exam is coming and he is really under the cosh now.
The tennis player is under the cosh after his terrible start. He doesn't want to let his fans down.
Relieve the pressure that someone is coping with
1. Used to tell someone to stop irritating you further when you are already angry or annoyed
2. Used to tell someone to stop persuading or pressuring you into doing something
Used to say that someone does not work effectively when they are under pressure.
1. To exert oneself to the greatest extent possible; to put the greatest amount of effort.
2. To annoy, harrumph, or pressurize someone over something for an extended amount of time.
3. To tease someone or make trouble for someone.
To be under pressure or in a difficult situation.
A cosh is a short, weighted stick or truncheon, commonly carried by street ruffians, and dates from 1869, according to the OED. The origin is unknown, although it could be echoic of the sound such an implement might make if used to strike another person. "To be under the cosh" has acquired a figurative meaning from the mid-20th century and means to be under pressure or duress, presumably from the allusion of being threatened by a cosh.
To be very wet
Because of forgetting bringing an umbrella, I look like a drowned rat when it rains.