Alexander sent me a picture of himself that said underneath, "I AM A WRESTLER"
Alexander was a wrestler
And a very fine wrestler was he,
He wrestled his way off to school
And pinned his teacher for three.
The principal was quite upset
He yelled, "Alex! Stop!"
So Alex wrestled with himself
And still came out on top.

• underneath [,ʌndə´ni:θ] ad.&prep.在底下 (初中英语单词)
• principal [´prinsəpəl] a.主要的 n.负责人 (初中英语单词)