Tam diu minime visu! - Long time, no see!
Tam exanimis quam tunica nehru fio - I am as dead as the nehru jacket
Tamdiu discendum est, quamdiu vivas - We should learn as long as we may live. (We live and learn.) (Seneca Philosophus)

Tamquam alter idem

As if a second self. (Cicero)

Tanta stultitia mortalium est - What fools these mortals be
Tantum eruditi sunt liberi - Only the educated are free. (Epictetus)
Tantum religio potuit suadere malorum - So potent was religion in persuading to evil deeds. (Lucretius)
Tarditas et procrastinatio odiosa est - Delay and procrastination is hateful. (Cicero)
Te audire non possum. Musa sapientum fixa est in aure - I can't hear you. I have a banana in my ear
Te capiam, cunicule sceleste! - I'll get you, you wascally wabbit!