Suck it up!

 Mushy = sentimental           Nail (something) = to do or say something perfectly 

Etymology: Probably a variation of the expression "suck up your chest," meaning "compose yourself, bear your troubles, stand tall, and proceed." It’s a popular and informal way of telling someone that they have to “put up with” a situation (tolerate it) whether they like it or not. Some similar expressions: “deal with it”, “push through it”, “man up” (be a man) and “grin and bear it.” 

1. If I’m feeling under the weather I just have to suck it up and continue teaching classes. I might have to push through a headache, a cold, sleepiness, stress or a number of feelings. It’s the same with most jobs. 

2. People who work in customer service or have clients have to deal with difficult people as part of their job. Part of being professional is biting your tongue and sucking it up. Everyone appreciates someone who can remain calm even when they have to deal with angry complaining customers. 

3. When people try out (go to an audition) for talent shows such as “American Idol” or “The X Factor”, they have to listen to the judges’ final decision and suck it up no matter how scathing (severe) the criticisms: www.youtube.com/watch?v=CXHSFI-hVR4 

4. With what circumstance(s) in life do you have to suck it up because there is nothing you can do to change it right now? An irritable boss? Noisy neighbors? A critical mother-in-law?