出典:Wiktionary
出典:『Wiktionary』 (2025/09/16 00:14 UTC 版)
Probably a variation of the expression suck up your chest, meaning roughly compose yourself, bear your troubles, stand tall, and proceed.
suck it up (third-person singular simple present sucks it up, present participle sucking it up, simple past and past participle sucked it up)
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