Yes, just by talking

"Wow, you like what you see, don't you Matt? You didn't expect a twink like me to have such a big cock, did you?"

Tyler reaches down and slowly starts stroking himself in front of you. Then, he sits beside you to whisper in your ear as he strokes himself.

"Look how hard just looking at you has made me. Just imagine how hard I'm going to be if you let me suck that dick of yours. You want to get hard for me, Matt? You're so hot I'd let you fuck my throat in front of everyone here."

You feel your dick start to grow as Tyler continues, "There you go, baby. Show me how big that fucking thing gets...oh fuck, you're huge. I can't stop jerking off looking at it. Fuck, can I see it?"