past tense: methought.
Their birthright high and holy!
A mountain-stream that ends in mud
Methinks is melancholy.
Example 2: That's a nice arse methinks.
Can be used at any point in the sentence, thus adding a flexibility advantage over "I think". However, owing to its poor continuity with formal English, it is often suggestive of idiocy.
1: Methinks you are wrong.
1: Jane is HOT, methinks!!
2: Methinks is a stupid word, methinks.