Gaudeamus igitur . Juvenes dum sumus . Post jucundam juventutem . Post molestam senectutem . Nos habebit humus

GAVDEAMVS IGITVR = Therefore let us rejoice
IVVENES DVM SVMVS = While we are young
POST IVCVNDAM IVVENTVTEM = After pleasing youth [and]
POST MOLESTAM SENECTVTEM = After labored old age
NOS HABEBIT HVMVS = The ground will hold us

-courtesy of my younger brother

Commonly sung at Polish universities during the inauguration of an academic year. Vivant omnes virgines, faciles, formosae are my favourite lines, though another version where it's changed into graciles may be used instead.