definition of
stick-in-the-mud

[1] #1 stick-in-the-mud n. [plodder, slowpoke, slowcoach] someone who moves slowly; "in England they call a slowpoke a slowcoach". wn

[2] #2 stick-in-the-mud s. [fogyish, moss-grown, mossy, stodgy] (used pejoratively) out of fashion; old fashioned; "moss-grown ideas about family life". wn