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When your friend says 'I can text tho' it really means 'I'm ready to get screamed at by you for 2 hours' and 'I'm not dead yet so I'll text you back when I'm not dead anymore'.
'I can text tho', like you're texting me right now and I'm not going anywhere.
'I can text tho', I just woke up and I'm already tired of you.
'I can text tho', I'm going to text you back in 5 minutes, maybe. Maybe not.