Off-the-wall and Tongue-in-cheek

Off-the-wall adjective - Different from the ordinary in a way that causes curiosity or suspicion.

Tongue-in-cheek and off-the-wall are semantically related. In some cases you can use "Tongue-in-cheek" instead an adjective phrase "Off-the-wall".

Tongue-in-cheek adjective - Cleverly amusing in tone.

Off-the-wall and tongue-in-cheek are semantically related. Sometimes you can use "Off-the-wall" instead an adjective phrase "Tongue-in-cheek".