platitudinous, platitudinal, bromidic, unoriginal, conventional, cornified, banal, scripted, stereotypical, yawny, more...

cool, hip, trendy, modern

corn, corny joke, corny pun, corny pick-up line, more...

little, dear, old, poor, sound, real, good, hearted, eager, only, much

like dad jokes,   like some groaners,   funny in a bad way,   like some dad jokes,   bad funny,   like bad jokes,   groan elicitors,   very lame,   many dad jokes,   too romantic