繃不住

(Internet slang) can't contain oneself / unable to bear / can't help (doing sth)

to draw tight / to stretch taut / to tack (with thread or pin) / embroidery hoop / woven bed mat

to have a taut face

no; not so / (bound form) not; un-

repeatedly / continuously / constantly / unable to (resist, conceal etc)

(verb complement) unable to firmly or securely (grasp, recall etc) / repeatedly; continuously; constantly

to live / to dwell / to stay / to reside / to stop / (suffix indicating firmness, steadiness, or coming to a halt)